diff options
Diffstat (limited to 'llvm/test/CodeGen/X86/pr165755.ll')
| -rw-r--r-- | llvm/test/CodeGen/X86/pr165755.ll | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/llvm/test/CodeGen/X86/pr165755.ll b/llvm/test/CodeGen/X86/pr165755.ll new file mode 100644 index 0000000..3ab484f --- /dev/null +++ b/llvm/test/CodeGen/X86/pr165755.ll @@ -0,0 +1,26 @@ +; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py UTC_ARGS: --version 6 +; RUN: llc < %s -mtriple=i686-- | FileCheck %s --check-prefixes=X86 +; RUN: llc < %s -mtriple=x86_64-- | FileCheck %s --check-prefixes=X64 + +define i32 @PR165755(ptr %p0) { +; X86-LABEL: PR165755: +; X86: # %bb.0: +; X86-NEXT: movl {{[0-9]+}}(%esp), %ecx +; X86-NEXT: movl (%ecx), %eax +; X86-NEXT: movb $0, (%ecx) +; X86-NEXT: retl +; +; X64-LABEL: PR165755: +; X64: # %bb.0: +; X64-NEXT: movl (%rdi), %eax +; X64-NEXT: movb $0, (%rdi) +; X64-NEXT: retq + %ld64 = load i64, ptr %p0, align 8 + store i8 0, ptr %p0, align 1 + %ld32 = load i32, ptr %p0, align 8 + %mask = and i32 %ld32, 32 + %zext = zext i32 %mask to i64 + %srl = lshr i64 %ld64, %zext + %res = trunc i64 %srl to i32 + ret i32 %res +} |