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dd30f2354a
Summary: This patch fixes PR37526 by simplifying the newly generated LoadInst instructions. If the pointer address is a bitcast from the pointer to the NewType, we can just remove this extra bitcast instead of creating the new one. This fixes the PR37526 + may speed up the whole compilation process. Reviewers: spatel, RKSimon, hfinkel Subscribers: llvm-commits Differential Revision: https://reviews.llvm.org/D47144 llvm-svn: 332855
23 lines
815 B
LLVM
23 lines
815 B
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt -instcombine -S < %s | FileCheck %s
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define void @PR37526(i32* %pz, i32* %px, i32* %py) {
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; CHECK-LABEL: @PR37526(
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; CHECK-NEXT: [[T2:%.*]] = load i32, i32* [[PY:%.*]], align 4
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; CHECK-NEXT: [[T3:%.*]] = load i32, i32* [[PX:%.*]], align 4
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; CHECK-NEXT: [[CMP:%.*]] = icmp slt i32 [[T2]], [[T3]]
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; CHECK-NEXT: [[R1:%.*]] = select i1 [[CMP]], i32 [[T3]], i32 [[T2]]
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; CHECK-NEXT: store i32 [[R1]], i32* [[PZ:%.*]], align 4
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; CHECK-NEXT: ret void
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;
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%t1 = bitcast i32* %pz to i64*
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%t2 = load i32, i32* %py
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%t3 = load i32, i32* %px
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%cmp = icmp slt i32 %t2, %t3
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%select = select i1 %cmp, i32* %px, i32* %py
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%bc = bitcast i32* %select to i64*
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%r = load i64, i64* %bc
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store i64 %r, i64* %t1
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ret void
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}
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