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