124 lines
4 KiB
LLVM
124 lines
4 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt < %s -passes=simplifycfg -simplifycfg-require-and-preserve-domtree=1 -sink-common-insts -S | FileCheck %s
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; RUN: opt < %s -passes='simplifycfg<sink-common-insts>' -S | FileCheck %s
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target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64"
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target triple = "x86_64-pc-linux-gnu"
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; `unreachable` block has conditional predecessors,
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; but everything we'd sink from unconditional predecessors are speculatable.
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; Also, too many phi's would normally be needed.
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define void @t0(i4 %cond, i32 %a, i32 %b, i32 %c, i32 %d, i32 %e, i32 %f, i32 %g, i32 %h) {
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; CHECK-LABEL: @t0(
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; CHECK-NEXT: switch i4 [[COND:%.*]], label [[END:%.*]] [
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; CHECK-NEXT: i4 0, label [[END_SINK_SPLIT:%.*]]
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; CHECK-NEXT: i4 -1, label [[END_SINK_SPLIT]]
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; CHECK-NEXT: i4 1, label [[BB1:%.*]]
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; CHECK-NEXT: i4 -2, label [[BB1]]
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; CHECK-NEXT: ]
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; CHECK: bb1:
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; CHECK-NEXT: br label [[END_SINK_SPLIT]]
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; CHECK: end.sink.split:
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; CHECK-NEXT: [[H_SINK:%.*]] = phi i32 [ [[H:%.*]], [[BB1]] ], [ [[E:%.*]], [[TMP0:%.*]] ], [ [[E]], [[TMP0]] ]
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; CHECK-NEXT: [[G_SINK:%.*]] = phi i32 [ [[G:%.*]], [[BB1]] ], [ [[D:%.*]], [[TMP0]] ], [ [[D]], [[TMP0]] ]
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; CHECK-NEXT: [[V4:%.*]] = add i32 [[A:%.*]], [[B:%.*]]
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; CHECK-NEXT: [[V5:%.*]] = add i32 [[V4]], [[C:%.*]]
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; CHECK-NEXT: [[V6:%.*]] = add i32 [[G_SINK]], [[H_SINK]]
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; CHECK-NEXT: [[R7:%.*]] = add i32 [[V5]], [[V6]]
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; CHECK-NEXT: call void @use32(i32 [[R7]])
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; CHECK-NEXT: unreachable
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; CHECK: end:
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; CHECK-NEXT: unreachable
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;
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switch i4 %cond, label %end [
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i4 0, label %bb0
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i4 -1, label %bb0
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i4 1, label %bb1
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i4 -2, label %bb1
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]
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bb0:
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%v0 = add i32 %a, %b
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%v1 = add i32 %v0, %c
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%v2 = add i32 %d, %e
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%r3 = add i32 %v1, %v2
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call void @use32(i32 %r3)
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br label %end
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bb1:
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%v4 = add i32 %a, %b
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%v5 = add i32 %v4, %c
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%v6 = add i32 %g, %h
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%r7 = add i32 %v5, %v6
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call void @use32(i32 %r7)
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br label %end
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end:
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unreachable
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}
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; Same, as @t0, but there's also a loop.
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define void @t1(i4 %cond, i1 %cond.loop, i32 %a, i32 %b, i32 %c, i32 %d, i32 %e, i32 %f, i32 %g, i32 %h) {
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; CHECK-LABEL: @t1(
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; CHECK-NEXT: switch i4 [[COND:%.*]], label [[END_EARLY:%.*]] [
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; CHECK-NEXT: i4 0, label [[BB0:%.*]]
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; CHECK-NEXT: i4 -1, label [[BB0]]
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; CHECK-NEXT: i4 1, label [[BB1:%.*]]
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; CHECK-NEXT: i4 -2, label [[BB1]]
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; CHECK-NEXT: ]
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; CHECK: bb0:
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; CHECK-NEXT: [[V0:%.*]] = add i32 [[A:%.*]], [[B:%.*]]
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; CHECK-NEXT: [[V1:%.*]] = add i32 [[V0]], [[C:%.*]]
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; CHECK-NEXT: [[V2:%.*]] = add i32 [[D:%.*]], [[E:%.*]]
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; CHECK-NEXT: [[R3:%.*]] = add i32 [[V1]], [[V2]]
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; CHECK-NEXT: call void @use32(i32 [[R3]])
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; CHECK-NEXT: br label [[END_EARLY]]
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; CHECK: bb1:
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; CHECK-NEXT: [[V4:%.*]] = add i32 [[A]], [[B]]
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; CHECK-NEXT: [[V5:%.*]] = add i32 [[V4]], [[C]]
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; CHECK-NEXT: [[V6:%.*]] = add i32 [[G:%.*]], [[H:%.*]]
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; CHECK-NEXT: [[R7:%.*]] = add i32 [[V5]], [[V6]]
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; CHECK-NEXT: call void @use32(i32 [[R7]])
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; CHECK-NEXT: br label [[END_EARLY]]
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; CHECK: end.early:
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; CHECK-NEXT: call void @sideeffect()
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; CHECK-NEXT: br i1 [[COND_LOOP:%.*]], label [[END_EARLY]], label [[END:%.*]]
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; CHECK: end:
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; CHECK-NEXT: call void @sideeffect()
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; CHECK-NEXT: unreachable
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;
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switch i4 %cond, label %end.early [
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i4 0, label %bb0
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i4 -1, label %bb0
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i4 1, label %bb1
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i4 -2, label %bb1
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]
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bb0:
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%v0 = add i32 %a, %b
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%v1 = add i32 %v0, %c
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%v2 = add i32 %d, %e
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%r3 = add i32 %v1, %v2
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call void @use32(i32 %r3)
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br label %end.early
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bb1:
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%v4 = add i32 %a, %b
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%v5 = add i32 %v4, %c
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%v6 = add i32 %g, %h
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%r7 = add i32 %v5, %v6
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call void @use32(i32 %r7)
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br label %end.early
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end.early:
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call void @sideeffect()
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br i1 %cond.loop, label %end.early, label %end
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end:
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call void @sideeffect()
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unreachable
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}
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declare void @use32(i32) speculatable
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declare void @sideeffect()
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