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46afffeee4
This fixes the issue encountered in D71164. Instead of using a range-based for, manually iterate over the users and advance the iterator beforehand, so we do not skip any users due to iterator invalidation. Differential Revision: https://reviews.llvm.org/D72657
34 lines
1.0 KiB
LLVM
34 lines
1.0 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt -S -instcombine < %s | FileCheck %s
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@Q = internal unnamed_addr global double 1.000000e+00, align 8
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define double @test(i1 %c, i64* %p) {
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; CHECK-LABEL: @test(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: br i1 [[C:%.*]], label [[IF:%.*]], label [[END:%.*]]
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; CHECK: if:
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; CHECK-NEXT: [[LOAD1:%.*]] = load double, double* @Q, align 8
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; CHECK-NEXT: br label [[END]]
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; CHECK: end:
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; CHECK-NEXT: [[TMP0:%.*]] = phi double [ 0.000000e+00, [[ENTRY:%.*]] ], [ [[LOAD1]], [[IF]] ]
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; CHECK-NEXT: [[TMP1:%.*]] = bitcast i64* [[P:%.*]] to double*
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; CHECK-NEXT: store double [[TMP0]], double* [[TMP1]], align 8
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; CHECK-NEXT: ret double [[TMP0]]
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;
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entry:
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br i1 %c, label %if, label %end
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if:
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%load = load i64, i64* bitcast (double* @Q to i64*), align 8
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br label %end
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end:
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%phi = phi i64 [ 0, %entry ], [ %load, %if ]
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store i64 %phi, i64* %p, align 8
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%cast = bitcast i64 %phi to double
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ret double %cast
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uselistorder i64 %phi, { 1, 0 }
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}
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