04b944e230
The only interesting test change is in @PR31262, where the following fold is now performed, while it previously was not: https://alive2.llvm.org/ce/z/a5Qmr6 llvm/test/Transforms/InstSimplify/ConstProp/gep.ll has not been updated, because there is a tradeoff between folding and inrange preservation there that we may want to discuss. Updates have been performed using: https://gist.github.com/nikic/98357b71fd67756b0f064c9517b62a34
29 lines
723 B
LLVM
29 lines
723 B
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt < %s -passes=instsimplify -S | FileCheck %s
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@g = external global i16, align 1
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@g2 = external global i16, align 1
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define i64 @ptrdiff1() {
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; CHECK-LABEL: @ptrdiff1(
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; CHECK-NEXT: ret i64 sub (i64 ptrtoint (ptr @g to i64), i64 ptrtoint (ptr @g2 to i64))
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;
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%i = ptrtoint ptr @g to i64
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%i2 = ptrtoint ptr @g2 to i64
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%diff = sub i64 %i, %i2
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%r = freeze i64 %diff
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ret i64 %r
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}
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define i64 @ptrdiff2() {
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; CHECK-LABEL: @ptrdiff2(
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; CHECK-NEXT: ret i64 -2
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;
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%i = ptrtoint ptr @g to i64
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%gep = getelementptr i16, ptr @g, i64 1
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%i2 = ptrtoint ptr %gep to i64
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%diff = sub i64 %i, %i2
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%r = freeze i64 %diff
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ret i64 %r
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}
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