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0f17fdc4c5
There were two combines not covered by the check before now, neither of which actually differed from normal in the benefit analysis. The most recent seems to be because it was just added at the top of the function (naturally). The older is from way back in 2008 (r46687) when we just didn't put those checks in so routinely, and has been diligently maintained since. llvm-svn: 341831
28 lines
1.0 KiB
LLVM
Executable File
28 lines
1.0 KiB
LLVM
Executable File
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt -instcombine < %s -S | FileCheck %s
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define void @test() #0 {
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; CHECK-LABEL: @test(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: br label [[FOR_BODY:%.*]]
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; CHECK: for.body:
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; CHECK-NEXT: [[INDVARS_IV:%.*]] = phi i64 [ 0, [[ENTRY:%.*]] ], [ [[INDVARS_IV_NEXT:%.*]], [[FOR_BODY]] ]
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; CHECK-NEXT: [[INDVARS_IV_NEXT]] = add nuw nsw i64 [[INDVARS_IV]], 1
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; CHECK-NEXT: [[EXITCOND:%.*]] = icmp ult i64 [[INDVARS_IV_NEXT]], 40
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; CHECK-NEXT: br i1 [[EXITCOND]], label [[FOR_END:%.*]], label [[FOR_BODY]]
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; CHECK: for.end:
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; CHECK-NEXT: ret void
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;
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entry:
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br label %for.body
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for.body: ; preds = %for.body, %entry
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%indvars.iv = phi i64 [ 0, %entry ], [ %indvars.iv.next, %for.body ]
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%indvars.iv.next = add nsw i64 %indvars.iv, 1
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%exitcond = icmp slt i64 %indvars.iv.next, 40
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br i1 %exitcond, label %for.end, label %for.body
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for.end: ; preds = %for.body
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ret void
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}
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