f8045b250d
This includes a fix for cases where things get marked as overdefined in
ResolvedUndefsIn, but we later discover a constant. To avoid crashing,
we consistently bail out on overdefined values in the visitors. This is
similar to the previous behavior with forcedconstant.
This reverts the revert commit 02b72f564c.
35 lines
1.0 KiB
LLVM
35 lines
1.0 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --function-signature --scrub-attributes
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; RUN: opt < %s -S -ipsccp | FileCheck %s
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target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
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target triple = "x86_64-unknown-linux-gnu"
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define i64 @fn2() {
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; CHECK-LABEL: define {{[^@]+}}@fn2()
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; CHECK-NEXT: entry:
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; CHECK-NEXT: [[CONV:%.*]] = sext i32 undef to i64
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; CHECK-NEXT: [[DIV:%.*]] = sdiv i64 8, [[CONV]]
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; CHECK-NEXT: [[CALL2:%.*]] = call i64 @fn1(i64 [[DIV]])
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; CHECK-NEXT: ret i64 [[CALL2]]
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;
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entry:
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%conv = sext i32 undef to i64
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%div = sdiv i64 8, %conv
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%call2 = call i64 @fn1(i64 %div)
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ret i64 %call2
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}
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define internal i64 @fn1(i64 %p1) {
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; CHECK-LABEL: define {{[^@]+}}@fn1
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; CHECK-SAME: (i64 [[P1:%.*]])
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; CHECK-NEXT: entry:
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; CHECK-NEXT: [[TOBOOL:%.*]] = icmp ne i64 [[P1]], 0
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; CHECK-NEXT: [[COND:%.*]] = select i1 [[TOBOOL]], i64 [[P1]], i64 [[P1]]
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; CHECK-NEXT: ret i64 [[COND]]
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;
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entry:
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%tobool = icmp ne i64 %p1, 0
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%cond = select i1 %tobool, i64 %p1, i64 %p1
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ret i64 %cond
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}
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