8851ea64a5
The result here may require truncation. Fix this by removing the calculateOffsetDiff() helper entirely. As far as I can tell, this code does not actually have to deal with different bitwidths. findBaseConstants() will produce ranges of constants with equal types, which is what maximizeConstantsInRange() will then work on. Fixes assertion reported at: https://github.com/llvm/llvm-project/pull/114539#issuecomment-2453008679
19 lines
735 B
LLVM
19 lines
735 B
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 5
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; RUN: opt -S -passes=consthoist -mtriple=armv4t-unknown-linux-gnueabi < %s | FileCheck %s
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define i1 @test(i32 %arg) optsize {
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; CHECK-LABEL: define i1 @test(
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; CHECK-SAME: i32 [[ARG:%.*]]) #[[ATTR0:[0-9]+]] {
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; CHECK-NEXT: [[ENTRY:.*:]]
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; CHECK-NEXT: [[CONST:%.*]] = bitcast i32 380633088 to i32
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; CHECK-NEXT: [[CONST_MAT:%.*]] = add i32 [[CONST]], -381681664
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; CHECK-NEXT: [[SHR_MASK:%.*]] = and i32 [[ARG]], [[CONST_MAT]]
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; CHECK-NEXT: [[CMP:%.*]] = icmp eq i32 [[SHR_MASK]], [[CONST]]
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; CHECK-NEXT: ret i1 [[CMP]]
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;
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entry:
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%shr.mask = and i32 %arg, -1048576
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%cmp = icmp eq i32 %shr.mask, 380633088
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ret i1 %cmp
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}
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