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bb6ce38639
This doesn't seem to have actually broken anything. It was paranoia on my part. Trying again now that bots are more stable. This is a follow up of the r198338 commit that added truncates for lcssa phi nodes. Sinking the truncates below the phis cleans up the loop and simplifies subsequent analysis within the indvars pass. llvm-svn: 198678
41 lines
1.0 KiB
LLVM
41 lines
1.0 KiB
LLVM
; RUN: opt < %s -indvars -S | FileCheck %s
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target triple = "x86_64-apple-darwin"
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; CHECK-LABEL: @sloop
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; CHECK-LABEL: B18:
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; Only one phi now.
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; CHECK: phi
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; CHECK-NOT: phi
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; One trunc for the gep.
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; CHECK: trunc i64 %indvars.iv to i32
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; One trunc for the dummy() call.
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; CHECK-LABEL: exit24:
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; CHECK: trunc i64 {{.*}}lcssa.wide to i32
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define void @sloop(i32* %a) {
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Prologue:
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br i1 undef, label %B18, label %B6
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B18: ; preds = %B24, %Prologue
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%.02 = phi i32 [ 0, %Prologue ], [ %tmp33, %B24 ]
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%tmp23 = zext i32 %.02 to i64
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%tmp33 = add i32 %.02, 1
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%o = getelementptr i32* %a, i32 %.02
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%v = load i32* %o
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%t = icmp eq i32 %v, 0
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br i1 %t, label %exit24, label %B24
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B24: ; preds = %B18
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%t2 = icmp eq i32 %tmp33, 20
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br i1 %t2, label %B6, label %B18
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B6: ; preds = %Prologue
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ret void
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exit24: ; preds = %B18
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call void @dummy(i32 %.02)
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unreachable
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}
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declare void @dummy(i32)
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