60 lines
2.2 KiB
LLVM
60 lines
2.2 KiB
LLVM
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; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt -S -instcombine -instcombine-infinite-loop-threshold=2 < %s | FileCheck %s
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; This used to require 10 instcombine iterations to fully optimize.
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; The number of iterations grew linearly with the number of DSEd stores,
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; resulting in overall quadratic runtime.
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%struct.S3 = type { i64 }
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@csmith_sink_ = dso_local global i64 0, align 1
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@g_302_7 = internal constant i32 0, align 1
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@g_313_0 = internal global i16 0, align 1
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@g_313_1 = internal global i32 0, align 1
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@g_313_2 = internal global i32 0, align 1
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@g_313_3 = internal global i32 0, align 1
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@g_313_4 = internal global i16 0, align 1
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@g_313_5 = internal global i16 0, align 1
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@g_313_6 = internal global i16 0, align 1
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@g_316 = internal global %struct.S3 zeroinitializer, align 1
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@g_316_1_0 = internal global i16 0, align 1
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define i16 @main() {
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; CHECK-LABEL: @main(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: store i64 0, i64* @csmith_sink_, align 8
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; CHECK-NEXT: ret i16 0
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;
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entry:
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store i64 0, i64* @csmith_sink_, align 1
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%0 = load i16, i16* @g_313_0, align 1
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%conv2 = sext i16 %0 to i64
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store i64 %conv2, i64* @csmith_sink_, align 1
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%1 = load i32, i32* @g_313_1, align 1
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%conv3 = zext i32 %1 to i64
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store i64 %conv3, i64* @csmith_sink_, align 1
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%2 = load i32, i32* @g_313_2, align 1
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%conv4 = sext i32 %2 to i64
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store i64 %conv4, i64* @csmith_sink_, align 1
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%3 = load i32, i32* @g_313_3, align 1
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%conv5 = zext i32 %3 to i64
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store i64 %conv5, i64* @csmith_sink_, align 1
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%4 = load i16, i16* @g_313_4, align 1
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%conv6 = sext i16 %4 to i64
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store i64 %conv6, i64* @csmith_sink_, align 1
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%5 = load i16, i16* @g_313_5, align 1
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%conv7 = sext i16 %5 to i64
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store i64 %conv7, i64* @csmith_sink_, align 1
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%6 = load i16, i16* @g_313_6, align 1
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%conv8 = sext i16 %6 to i64
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store i64 %conv8, i64* @csmith_sink_, align 1
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%7 = load i64, i64* getelementptr inbounds (%struct.S3, %struct.S3* @g_316, i32 0, i32 0), align 1
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store i64 %7, i64* @csmith_sink_, align 1
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%8 = load i16, i16* @g_316_1_0, align 1
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%conv9 = sext i16 %8 to i64
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store i64 %conv9, i64* @csmith_sink_, align 1
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store i64 0, i64* @csmith_sink_, align 1
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ret i16 0
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}
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