362 lines
13 KiB
LLVM
362 lines
13 KiB
LLVM
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; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 2
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; RUN: opt -S -passes=loop-reroll %s | FileCheck %s
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target triple = "aarch64--linux-gnu"
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define void @rerollable1(ptr nocapture %a) {
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; CHECK-LABEL: define void @rerollable1
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; CHECK-SAME: (ptr nocapture [[A:%.*]]) {
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; CHECK-NEXT: entry:
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; CHECK-NEXT: br label [[LOOP:%.*]]
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; CHECK: loop:
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; CHECK-NEXT: [[IV:%.*]] = phi i64 [ 0, [[ENTRY:%.*]] ], [ [[IV_NEXT:%.*]], [[LOOP]] ]
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; CHECK-NEXT: [[TMP0:%.*]] = shl nuw nsw i64 [[IV]], 2
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; CHECK-NEXT: [[TMP1:%.*]] = add i64 [[TMP0]], 160
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; CHECK-NEXT: [[SCEVGEP1:%.*]] = getelementptr i8, ptr [[A]], i64 [[TMP1]]
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; CHECK-NEXT: [[TMP2:%.*]] = shl nuw nsw i64 [[IV]], 2
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; CHECK-NEXT: [[TMP3:%.*]] = add i64 [[TMP2]], 80
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; CHECK-NEXT: [[SCEVGEP:%.*]] = getelementptr i8, ptr [[A]], i64 [[TMP3]]
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; CHECK-NEXT: [[VALUE0:%.*]] = load i32, ptr [[SCEVGEP1]], align 4
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; CHECK-NEXT: store i32 [[VALUE0]], ptr [[SCEVGEP]], align 4
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; CHECK-NEXT: [[IV_NEXT]] = add nuw nsw i64 [[IV]], 1
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; CHECK-NEXT: [[EXITCOND2:%.*]] = icmp eq i64 [[IV]], 9
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; CHECK-NEXT: br i1 [[EXITCOND2]], label [[EXIT:%.*]], label [[LOOP]]
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; CHECK: exit:
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; CHECK-NEXT: ret void
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;
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entry:
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br label %loop
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loop:
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; base instruction
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%iv = phi i64 [ 0, %entry ], [ %iv.next, %loop ]
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; NO unrerollable instructions
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; extra simple arithmetic operations, used by root instructions
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%plus20 = add nuw nsw i64 %iv, 20
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%plus10 = add nuw nsw i64 %iv, 10
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; root instruction 0
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%ldptr0 = getelementptr inbounds [2 x i32], ptr %a, i64 %plus20, i64 0
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%value0 = load i32, ptr %ldptr0, align 4
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%stptr0 = getelementptr inbounds [2 x i32], ptr %a, i64 %plus10, i64 0
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store i32 %value0, ptr %stptr0, align 4
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; root instruction 1
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%ldptr1 = getelementptr inbounds [2 x i32], ptr %a, i64 %plus20, i64 1
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%value1 = load i32, ptr %ldptr1, align 4
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%stptr1 = getelementptr inbounds [2 x i32], ptr %a, i64 %plus10, i64 1
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store i32 %value1, ptr %stptr1, align 4
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; loop-increment
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%iv.next = add nuw nsw i64 %iv, 1
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; latch
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%exitcond = icmp eq i64 %iv.next, 5
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br i1 %exitcond, label %exit, label %loop
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exit:
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ret void
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}
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define void @unrerollable1(ptr nocapture %a) {
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; CHECK-LABEL: define void @unrerollable1
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; CHECK-SAME: (ptr nocapture [[A:%.*]]) {
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; CHECK-NEXT: entry:
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; CHECK-NEXT: br label [[LOOP:%.*]]
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; CHECK: loop:
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; CHECK-NEXT: [[IV:%.*]] = phi i64 [ 0, [[ENTRY:%.*]] ], [ [[IV_NEXT:%.*]], [[LOOP]] ]
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; CHECK-NEXT: [[STPTRX:%.*]] = getelementptr inbounds [2 x i32], ptr [[A]], i64 [[IV]], i64 0
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; CHECK-NEXT: store i32 999, ptr [[STPTRX]], align 4
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; CHECK-NEXT: [[PLUS20:%.*]] = add nuw nsw i64 [[IV]], 20
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; CHECK-NEXT: [[PLUS10:%.*]] = add nuw nsw i64 [[IV]], 10
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; CHECK-NEXT: [[LDPTR0:%.*]] = getelementptr inbounds [2 x i32], ptr [[A]], i64 [[PLUS20]], i64 0
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; CHECK-NEXT: [[VALUE0:%.*]] = load i32, ptr [[LDPTR0]], align 4
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; CHECK-NEXT: [[STPTR0:%.*]] = getelementptr inbounds [2 x i32], ptr [[A]], i64 [[PLUS10]], i64 0
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; CHECK-NEXT: store i32 [[VALUE0]], ptr [[STPTR0]], align 4
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; CHECK-NEXT: [[LDPTR1:%.*]] = getelementptr inbounds [2 x i32], ptr [[A]], i64 [[PLUS20]], i64 1
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; CHECK-NEXT: [[VALUE1:%.*]] = load i32, ptr [[LDPTR1]], align 4
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; CHECK-NEXT: [[STPTR1:%.*]] = getelementptr inbounds [2 x i32], ptr [[A]], i64 [[PLUS10]], i64 1
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; CHECK-NEXT: store i32 [[VALUE1]], ptr [[STPTR1]], align 4
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; CHECK-NEXT: [[IV_NEXT]] = add nuw nsw i64 [[IV]], 1
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; CHECK-NEXT: [[EXITCOND:%.*]] = icmp eq i64 [[IV_NEXT]], 5
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; CHECK-NEXT: br i1 [[EXITCOND]], label [[EXIT:%.*]], label [[LOOP]]
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; CHECK: exit:
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; CHECK-NEXT: ret void
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;
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entry:
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br label %loop
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loop:
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; base instruction
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%iv = phi i64 [ 0, %entry ], [ %iv.next, %loop ]
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; unrerollable instructions using %iv
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%stptrx = getelementptr inbounds [2 x i32], ptr %a, i64 %iv, i64 0
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store i32 999, ptr %stptrx, align 4
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; extra simple arithmetic operations, used by root instructions
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%plus20 = add nuw nsw i64 %iv, 20
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%plus10 = add nuw nsw i64 %iv, 10
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; root instruction 0
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%ldptr0 = getelementptr inbounds [2 x i32], ptr %a, i64 %plus20, i64 0
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%value0 = load i32, ptr %ldptr0, align 4
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%stptr0 = getelementptr inbounds [2 x i32], ptr %a, i64 %plus10, i64 0
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store i32 %value0, ptr %stptr0, align 4
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; root instruction 1
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%ldptr1 = getelementptr inbounds [2 x i32], ptr %a, i64 %plus20, i64 1
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%value1 = load i32, ptr %ldptr1, align 4
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%stptr1 = getelementptr inbounds [2 x i32], ptr %a, i64 %plus10, i64 1
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store i32 %value1, ptr %stptr1, align 4
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; loop-increment
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%iv.next = add nuw nsw i64 %iv, 1
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; latch
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%exitcond = icmp eq i64 %iv.next, 5
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br i1 %exitcond, label %exit, label %loop
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exit:
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ret void
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}
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define void @unrerollable2(ptr nocapture %a) {
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; CHECK-LABEL: define void @unrerollable2
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; CHECK-SAME: (ptr nocapture [[A:%.*]]) {
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; CHECK-NEXT: entry:
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; CHECK-NEXT: br label [[LOOP:%.*]]
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; CHECK: loop:
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; CHECK-NEXT: [[IV:%.*]] = phi i64 [ 0, [[ENTRY:%.*]] ], [ [[IV_NEXT:%.*]], [[LOOP]] ]
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; CHECK-NEXT: [[IV_NEXT]] = add nuw nsw i64 [[IV]], 1
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; CHECK-NEXT: [[STPTRX:%.*]] = getelementptr inbounds [2 x i32], ptr [[A]], i64 [[IV_NEXT]], i64 0
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; CHECK-NEXT: store i32 999, ptr [[STPTRX]], align 4
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; CHECK-NEXT: [[PLUS20:%.*]] = add nuw nsw i64 [[IV]], 20
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; CHECK-NEXT: [[PLUS10:%.*]] = add nuw nsw i64 [[IV]], 10
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; CHECK-NEXT: [[LDPTR0:%.*]] = getelementptr inbounds [2 x i32], ptr [[A]], i64 [[PLUS20]], i64 0
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; CHECK-NEXT: [[VALUE0:%.*]] = load i32, ptr [[LDPTR0]], align 4
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; CHECK-NEXT: [[STPTR0:%.*]] = getelementptr inbounds [2 x i32], ptr [[A]], i64 [[PLUS10]], i64 0
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; CHECK-NEXT: store i32 [[VALUE0]], ptr [[STPTR0]], align 4
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; CHECK-NEXT: [[LDPTR1:%.*]] = getelementptr inbounds [2 x i32], ptr [[A]], i64 [[PLUS20]], i64 1
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; CHECK-NEXT: [[VALUE1:%.*]] = load i32, ptr [[LDPTR1]], align 4
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; CHECK-NEXT: [[STPTR1:%.*]] = getelementptr inbounds [2 x i32], ptr [[A]], i64 [[PLUS10]], i64 1
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; CHECK-NEXT: store i32 [[VALUE1]], ptr [[STPTR1]], align 4
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; CHECK-NEXT: [[EXITCOND:%.*]] = icmp eq i64 [[IV_NEXT]], 5
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; CHECK-NEXT: br i1 [[EXITCOND]], label [[EXIT:%.*]], label [[LOOP]]
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; CHECK: exit:
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; CHECK-NEXT: ret void
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;
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entry:
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br label %loop
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loop:
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; base instruction
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%iv = phi i64 [ 0, %entry ], [ %iv.next, %loop ]
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; loop-increment
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%iv.next = add nuw nsw i64 %iv, 1
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; unrerollable instructions using %iv.next
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%stptrx = getelementptr inbounds [2 x i32], ptr %a, i64 %iv.next, i64 0
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store i32 999, ptr %stptrx, align 4
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; extra simple arithmetic operations, used by root instructions
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%plus20 = add nuw nsw i64 %iv, 20
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%plus10 = add nuw nsw i64 %iv, 10
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; root instruction 0
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%ldptr0 = getelementptr inbounds [2 x i32], ptr %a, i64 %plus20, i64 0
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%value0 = load i32, ptr %ldptr0, align 4
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%stptr0 = getelementptr inbounds [2 x i32], ptr %a, i64 %plus10, i64 0
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store i32 %value0, ptr %stptr0, align 4
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; root instruction 1
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%ldptr1 = getelementptr inbounds [2 x i32], ptr %a, i64 %plus20, i64 1
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%value1 = load i32, ptr %ldptr1, align 4
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%stptr1 = getelementptr inbounds [2 x i32], ptr %a, i64 %plus10, i64 1
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store i32 %value1, ptr %stptr1, align 4
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; latch
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%exitcond = icmp eq i64 %iv.next, 5
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br i1 %exitcond, label %exit, label %loop
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exit:
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ret void
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}
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define dso_local void @rerollable2() {
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; CHECK-LABEL: define dso_local void @rerollable2() {
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; CHECK-NEXT: entry:
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; CHECK-NEXT: br label [[LOOP:%.*]]
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; CHECK: loop:
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; CHECK-NEXT: [[IV:%.*]] = phi i32 [ 0, [[ENTRY:%.*]] ], [ [[IV_NEXT:%.*]], [[LOOP]] ]
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; CHECK-NEXT: [[TMP0:%.*]] = add i32 [[IV]], 24
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; CHECK-NEXT: [[TMP1:%.*]] = add i32 [[IV]], 20
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; CHECK-NEXT: [[IV_SCALED_DIV5:%.*]] = udiv i32 [[TMP1]], 5
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; CHECK-NEXT: tail call void @bar(i32 [[IV_SCALED_DIV5]])
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; CHECK-NEXT: [[IV_SCALED_ADD4_DIV5:%.*]] = udiv i32 [[TMP0]], 5
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; CHECK-NEXT: tail call void @bar(i32 [[IV_SCALED_ADD4_DIV5]])
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; CHECK-NEXT: [[IV_NEXT]] = add nuw nsw i32 [[IV]], 1
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; CHECK-NEXT: [[EXITCOND:%.*]] = icmp eq i32 [[IV]], 8
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; CHECK-NEXT: br i1 [[EXITCOND]], label [[EXIT:%.*]], label [[LOOP]]
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; CHECK: exit:
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; CHECK-NEXT: ret void
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;
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entry:
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br label %loop
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loop:
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; induction variable
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%iv = phi i32 [ 0, %entry ], [ %iv.next, %loop ]
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; scale instruction
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%iv.mul3 = mul nuw nsw i32 %iv, 3
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; extra simple arithmetic operations, used by root instructions
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%iv.scaled = add nuw nsw i32 %iv.mul3, 20
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; NO unrerollable instructions
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; root set 1
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; base instruction
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%iv.scaled.div5 = udiv i32 %iv.scaled, 5
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tail call void @bar(i32 %iv.scaled.div5)
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; root instruction 0
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%iv.scaled.add1 = add nuw nsw i32 %iv.scaled, 1
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%iv.scaled.add1.div5 = udiv i32 %iv.scaled.add1, 5
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tail call void @bar(i32 %iv.scaled.add1.div5)
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; root instruction 2
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%iv.scaled.add2 = add nuw nsw i32 %iv.scaled, 2
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%iv.scaled.add2.div5 = udiv i32 %iv.scaled.add2, 5
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tail call void @bar(i32 %iv.scaled.add2.div5)
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; root set 2
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; base instruction
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%iv.scaled.add4 = add nuw nsw i32 %iv.scaled, 4
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%iv.scaled.add4.div5 = udiv i32 %iv.scaled.add4, 5
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tail call void @bar(i32 %iv.scaled.add4.div5)
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; root instruction 0
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%iv.scaled.add5 = add nuw nsw i32 %iv.scaled, 5
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%iv.scaled.add5.div5 = udiv i32 %iv.scaled.add5, 5
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tail call void @bar(i32 %iv.scaled.add5.div5)
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; root instruction 2
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%iv.scaled.add6 = add nuw nsw i32 %iv.scaled, 6
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%iv.scaled.add6.div5 = udiv i32 %iv.scaled.add6, 5
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tail call void @bar(i32 %iv.scaled.add6.div5)
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; loop-increment
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%iv.next = add nuw nsw i32 %iv, 1
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; latch
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%cmp = icmp ult i32 %iv.next, 3
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br i1 %cmp, label %loop, label %exit
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exit:
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ret void
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}
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define dso_local void @unrerollable3() {
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; CHECK-LABEL: define dso_local void @unrerollable3() {
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; CHECK-NEXT: entry:
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; CHECK-NEXT: br label [[LOOP:%.*]]
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; CHECK: loop:
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; CHECK-NEXT: [[IV:%.*]] = phi i32 [ 0, [[ENTRY:%.*]] ], [ [[IV_NEXT:%.*]], [[LOOP]] ]
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; CHECK-NEXT: [[IV_MUL3:%.*]] = mul nuw nsw i32 [[IV]], 3
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; CHECK-NEXT: [[IV_SCALED:%.*]] = add nuw nsw i32 [[IV_MUL3]], 20
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; CHECK-NEXT: [[IV_MUL7:%.*]] = mul nuw nsw i32 [[IV]], 7
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; CHECK-NEXT: tail call void @bar(i32 [[IV_MUL7]])
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; CHECK-NEXT: [[IV_SCALED_DIV5:%.*]] = udiv i32 [[IV_SCALED]], 5
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; CHECK-NEXT: tail call void @bar(i32 [[IV_SCALED_DIV5]])
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; CHECK-NEXT: [[IV_SCALED_ADD1:%.*]] = add nuw nsw i32 [[IV_SCALED]], 1
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; CHECK-NEXT: [[IV_SCALED_ADD1_DIV5:%.*]] = udiv i32 [[IV_SCALED_ADD1]], 5
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; CHECK-NEXT: tail call void @bar(i32 [[IV_SCALED_ADD1_DIV5]])
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; CHECK-NEXT: [[IV_SCALED_ADD2:%.*]] = add nuw nsw i32 [[IV_SCALED]], 2
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; CHECK-NEXT: [[IV_SCALED_ADD2_DIV5:%.*]] = udiv i32 [[IV_SCALED_ADD2]], 5
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; CHECK-NEXT: tail call void @bar(i32 [[IV_SCALED_ADD2_DIV5]])
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; CHECK-NEXT: [[IV_SCALED_ADD4:%.*]] = add nuw nsw i32 [[IV_SCALED]], 4
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; CHECK-NEXT: [[IV_SCALED_ADD4_DIV5:%.*]] = udiv i32 [[IV_SCALED_ADD4]], 5
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; CHECK-NEXT: tail call void @bar(i32 [[IV_SCALED_ADD4_DIV5]])
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; CHECK-NEXT: [[IV_SCALED_ADD5:%.*]] = add nuw nsw i32 [[IV_SCALED]], 5
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; CHECK-NEXT: [[IV_SCALED_ADD5_DIV5:%.*]] = udiv i32 [[IV_SCALED_ADD5]], 5
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; CHECK-NEXT: tail call void @bar(i32 [[IV_SCALED_ADD5_DIV5]])
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; CHECK-NEXT: [[IV_SCALED_ADD6:%.*]] = add nuw nsw i32 [[IV_SCALED]], 6
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; CHECK-NEXT: [[IV_SCALED_ADD6_DIV5:%.*]] = udiv i32 [[IV_SCALED_ADD6]], 5
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; CHECK-NEXT: tail call void @bar(i32 [[IV_SCALED_ADD6_DIV5]])
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; CHECK-NEXT: [[IV_NEXT]] = add nuw nsw i32 [[IV]], 1
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; CHECK-NEXT: [[CMP:%.*]] = icmp ult i32 [[IV_NEXT]], 3
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; CHECK-NEXT: br i1 [[CMP]], label [[LOOP]], label [[EXIT:%.*]]
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; CHECK: exit:
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; CHECK-NEXT: ret void
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;
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entry:
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br label %loop
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loop:
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; induction variable
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%iv = phi i32 [ 0, %entry ], [ %iv.next, %loop ]
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; scale instruction
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%iv.mul3 = mul nuw nsw i32 %iv, 3
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; extra simple arithmetic operations, used by root instructions
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%iv.scaled = add nuw nsw i32 %iv.mul3, 20
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; unrerollable instructions using %iv
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%iv.mul7 = mul nuw nsw i32 %iv, 7
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tail call void @bar(i32 %iv.mul7)
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; root set 1
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; base instruction
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%iv.scaled.div5 = udiv i32 %iv.scaled, 5
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tail call void @bar(i32 %iv.scaled.div5)
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; root instruction 0
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%iv.scaled.add1 = add nuw nsw i32 %iv.scaled, 1
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%iv.scaled.add1.div5 = udiv i32 %iv.scaled.add1, 5
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tail call void @bar(i32 %iv.scaled.add1.div5)
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; root instruction 2
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%iv.scaled.add2 = add nuw nsw i32 %iv.scaled, 2
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%iv.scaled.add2.div5 = udiv i32 %iv.scaled.add2, 5
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tail call void @bar(i32 %iv.scaled.add2.div5)
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; root set 2
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; base instruction
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%iv.scaled.add4 = add nuw nsw i32 %iv.scaled, 4
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%iv.scaled.add4.div5 = udiv i32 %iv.scaled.add4, 5
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tail call void @bar(i32 %iv.scaled.add4.div5)
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|
; root instruction 0
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%iv.scaled.add5 = add nuw nsw i32 %iv.scaled, 5
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|
%iv.scaled.add5.div5 = udiv i32 %iv.scaled.add5, 5
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tail call void @bar(i32 %iv.scaled.add5.div5)
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|
; root instruction 2
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%iv.scaled.add6 = add nuw nsw i32 %iv.scaled, 6
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|
%iv.scaled.add6.div5 = udiv i32 %iv.scaled.add6, 5
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|
tail call void @bar(i32 %iv.scaled.add6.div5)
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||
|
|
||
|
; loop-increment
|
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|
%iv.next = add nuw nsw i32 %iv, 1
|
||
|
|
||
|
; latch
|
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|
%cmp = icmp ult i32 %iv.next, 3
|
||
|
br i1 %cmp, label %loop, label %exit
|
||
|
|
||
|
exit:
|
||
|
ret void
|
||
|
}
|
||
|
|
||
|
declare dso_local void @bar(i32)
|