106 lines
5.5 KiB
LLVM
106 lines
5.5 KiB
LLVM
|
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
|
||
|
|
; RUN: opt %s -S -riscv-codegenprepare -mtriple=riscv64 | FileCheck %s
|
||
|
|
|
||
|
|
; Make sure we convert the 4294967294 in for.body.preheader.new to -2 based on
|
||
|
|
; the upper 33 bits being zero by the dominating condition %cmp3.
|
||
|
|
define void @test2(ptr nocapture noundef %a, i32 noundef signext %n) {
|
||
|
|
; CHECK-LABEL: @test2(
|
||
|
|
; CHECK-NEXT: entry:
|
||
|
|
; CHECK-NEXT: [[CMP3:%.*]] = icmp sgt i32 [[N:%.*]], 0
|
||
|
|
; CHECK-NEXT: br i1 [[CMP3]], label [[FOR_BODY_PREHEADER:%.*]], label [[FOR_COND_CLEANUP:%.*]]
|
||
|
|
; CHECK: for.body.preheader:
|
||
|
|
; CHECK-NEXT: [[WIDE_TRIP_COUNT:%.*]] = zext nneg i32 [[N]] to i64
|
||
|
|
; CHECK-NEXT: [[XTRAITER:%.*]] = and i64 [[WIDE_TRIP_COUNT]], 1
|
||
|
|
; CHECK-NEXT: [[TMP0:%.*]] = icmp eq i32 [[N]], 1
|
||
|
|
; CHECK-NEXT: br i1 [[TMP0]], label [[FOR_COND_CLEANUP_LOOPEXIT_UNR_LCSSA:%.*]], label [[FOR_BODY_PREHEADER_NEW:%.*]]
|
||
|
|
; CHECK: for.body.preheader.new:
|
||
|
|
; CHECK-NEXT: [[UNROLL_ITER:%.*]] = and i64 [[WIDE_TRIP_COUNT]], -2
|
||
|
|
; CHECK-NEXT: br label [[FOR_BODY:%.*]]
|
||
|
|
; CHECK: for.cond.cleanup.loopexit.unr-lcssa:
|
||
|
|
; CHECK-NEXT: [[INDVARS_IV_UNR:%.*]] = phi i64 [ 0, [[FOR_BODY_PREHEADER]] ], [ [[INDVARS_IV_NEXT_1:%.*]], [[FOR_BODY]] ]
|
||
|
|
; CHECK-NEXT: [[LCMP_MOD_NOT:%.*]] = icmp eq i64 [[XTRAITER]], 0
|
||
|
|
; CHECK-NEXT: br i1 [[LCMP_MOD_NOT]], label [[FOR_COND_CLEANUP]], label [[FOR_BODY_EPIL:%.*]]
|
||
|
|
; CHECK: for.body.epil:
|
||
|
|
; CHECK-NEXT: [[ARRAYIDX_EPIL:%.*]] = getelementptr inbounds i32, ptr [[A:%.*]], i64 [[INDVARS_IV_UNR]]
|
||
|
|
; CHECK-NEXT: [[TMP1:%.*]] = load i32, ptr [[ARRAYIDX_EPIL]], align 4
|
||
|
|
; CHECK-NEXT: [[ADD_EPIL:%.*]] = add nsw i32 [[TMP1]], 4
|
||
|
|
; CHECK-NEXT: store i32 [[ADD_EPIL]], ptr [[ARRAYIDX_EPIL]], align 4
|
||
|
|
; CHECK-NEXT: br label [[FOR_COND_CLEANUP]]
|
||
|
|
; CHECK: for.cond.cleanup:
|
||
|
|
; CHECK-NEXT: ret void
|
||
|
|
; CHECK: for.body:
|
||
|
|
; CHECK-NEXT: [[INDVARS_IV:%.*]] = phi i64 [ 0, [[FOR_BODY_PREHEADER_NEW]] ], [ [[INDVARS_IV_NEXT_1]], [[FOR_BODY]] ]
|
||
|
|
; CHECK-NEXT: [[NITER:%.*]] = phi i64 [ 0, [[FOR_BODY_PREHEADER_NEW]] ], [ [[NITER_NEXT_1:%.*]], [[FOR_BODY]] ]
|
||
|
|
; CHECK-NEXT: [[ARRAYIDX:%.*]] = getelementptr inbounds i32, ptr [[A]], i64 [[INDVARS_IV]]
|
||
|
|
; CHECK-NEXT: [[TMP2:%.*]] = load i32, ptr [[ARRAYIDX]], align 4
|
||
|
|
; CHECK-NEXT: [[ADD:%.*]] = add nsw i32 [[TMP2]], 4
|
||
|
|
; CHECK-NEXT: store i32 [[ADD]], ptr [[ARRAYIDX]], align 4
|
||
|
|
; CHECK-NEXT: [[INDVARS_IV_NEXT:%.*]] = or i64 [[INDVARS_IV]], 1
|
||
|
|
; CHECK-NEXT: [[ARRAYIDX_1:%.*]] = getelementptr inbounds i32, ptr [[A]], i64 [[INDVARS_IV_NEXT]]
|
||
|
|
; CHECK-NEXT: [[TMP3:%.*]] = load i32, ptr [[ARRAYIDX_1]], align 4
|
||
|
|
; CHECK-NEXT: [[ADD_1:%.*]] = add nsw i32 [[TMP3]], 4
|
||
|
|
; CHECK-NEXT: store i32 [[ADD_1]], ptr [[ARRAYIDX_1]], align 4
|
||
|
|
; CHECK-NEXT: [[INDVARS_IV_NEXT_1]] = add nuw nsw i64 [[INDVARS_IV]], 2
|
||
|
|
; CHECK-NEXT: [[NITER_NEXT_1]] = add i64 [[NITER]], 2
|
||
|
|
; CHECK-NEXT: [[NITER_NCMP_1:%.*]] = icmp eq i64 [[NITER_NEXT_1]], [[UNROLL_ITER]]
|
||
|
|
; CHECK-NEXT: br i1 [[NITER_NCMP_1]], label [[FOR_COND_CLEANUP_LOOPEXIT_UNR_LCSSA]], label [[FOR_BODY]]
|
||
|
|
;
|
||
|
|
entry:
|
||
|
|
%cmp3 = icmp sgt i32 %n, 0
|
||
|
|
br i1 %cmp3, label %for.body.preheader, label %for.cond.cleanup
|
||
|
|
|
||
|
|
for.body.preheader: ; preds = %entry
|
||
|
|
%wide.trip.count = zext nneg i32 %n to i64
|
||
|
|
%xtraiter = and i64 %wide.trip.count, 1
|
||
|
|
%0 = icmp eq i32 %n, 1
|
||
|
|
br i1 %0, label %for.cond.cleanup.loopexit.unr-lcssa, label %for.body.preheader.new
|
||
|
|
|
||
|
|
for.body.preheader.new: ; preds = %for.body.preheader
|
||
|
|
%unroll_iter = and i64 %wide.trip.count, 4294967294
|
||
|
|
br label %for.body
|
||
|
|
|
||
|
|
for.cond.cleanup.loopexit.unr-lcssa: ; preds = %for.body, %for.body.preheader
|
||
|
|
%indvars.iv.unr = phi i64 [ 0, %for.body.preheader ], [ %indvars.iv.next.1, %for.body ]
|
||
|
|
%lcmp.mod.not = icmp eq i64 %xtraiter, 0
|
||
|
|
br i1 %lcmp.mod.not, label %for.cond.cleanup, label %for.body.epil
|
||
|
|
|
||
|
|
for.body.epil: ; preds = %for.cond.cleanup.loopexit.unr-lcssa
|
||
|
|
%arrayidx.epil = getelementptr inbounds i32, ptr %a, i64 %indvars.iv.unr
|
||
|
|
%1 = load i32, ptr %arrayidx.epil, align 4
|
||
|
|
%add.epil = add nsw i32 %1, 4
|
||
|
|
store i32 %add.epil, ptr %arrayidx.epil, align 4
|
||
|
|
br label %for.cond.cleanup
|
||
|
|
|
||
|
|
for.cond.cleanup: ; preds = %for.body.epil, %for.cond.cleanup.loopexit.unr-lcssa, %entry
|
||
|
|
ret void
|
||
|
|
|
||
|
|
for.body: ; preds = %for.body, %for.body.preheader.new
|
||
|
|
%indvars.iv = phi i64 [ 0, %for.body.preheader.new ], [ %indvars.iv.next.1, %for.body ]
|
||
|
|
%niter = phi i64 [ 0, %for.body.preheader.new ], [ %niter.next.1, %for.body ]
|
||
|
|
%arrayidx = getelementptr inbounds i32, ptr %a, i64 %indvars.iv
|
||
|
|
%2 = load i32, ptr %arrayidx, align 4
|
||
|
|
%add = add nsw i32 %2, 4
|
||
|
|
store i32 %add, ptr %arrayidx, align 4
|
||
|
|
%indvars.iv.next = or i64 %indvars.iv, 1
|
||
|
|
%arrayidx.1 = getelementptr inbounds i32, ptr %a, i64 %indvars.iv.next
|
||
|
|
%3 = load i32, ptr %arrayidx.1, align 4
|
||
|
|
%add.1 = add nsw i32 %3, 4
|
||
|
|
store i32 %add.1, ptr %arrayidx.1, align 4
|
||
|
|
%indvars.iv.next.1 = add nuw nsw i64 %indvars.iv, 2
|
||
|
|
%niter.next.1 = add i64 %niter, 2
|
||
|
|
%niter.ncmp.1 = icmp eq i64 %niter.next.1, %unroll_iter
|
||
|
|
br i1 %niter.ncmp.1, label %for.cond.cleanup.loopexit.unr-lcssa, label %for.body
|
||
|
|
}
|
||
|
|
|
||
|
|
; Make sure we do not change 4294967295 to -1 here.
|
||
|
|
define i64 @bug(i32 %x) {
|
||
|
|
; CHECK-LABEL: @bug(
|
||
|
|
; CHECK-NEXT: [[A:%.*]] = sext i32 [[X:%.*]] to i64
|
||
|
|
; CHECK-NEXT: [[B:%.*]] = and i64 [[A]], 4294967295
|
||
|
|
; CHECK-NEXT: ret i64 [[B]]
|
||
|
|
;
|
||
|
|
%a = sext i32 %x to i64
|
||
|
|
%b = and i64 %a, 4294967295
|
||
|
|
ret i64 %b
|
||
|
|
}
|