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88ed36369b
Summary: ValueTracking used to overwrite the analysis results computed from assumes and dominating conditions. This patch fixes this issue. Test Plan: test/Analysis/ValueTracking/assume.ll Reviewers: hfinkel, majnemer Reviewed By: majnemer Subscribers: llvm-commits Differential Revision: http://reviews.llvm.org/D10283 llvm-svn: 239718
15 lines
339 B
LLVM
15 lines
339 B
LLVM
; RUN: opt < %s -instcombine -S | FileCheck %s
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define i32 @assume_add(i32 %a, i32 %b) {
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; CHECK-LABEL: @assume_add(
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%1 = add i32 %a, %b
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%last_two_digits = and i32 %1, 3
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%2 = icmp eq i32 %last_two_digits, 0
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call void @llvm.assume(i1 %2)
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%3 = add i32 %1, 3
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; CHECK: %3 = or i32 %1, 3
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ret i32 %3
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}
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declare void @llvm.assume(i1)
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