maxjhandsome
/
llvm-project
forked from OSchip/llvm-project
1
0
Fork 0
Code Issues Pull Requests Packages Releases Wiki Activity
llvm-project/llvm/test/CodeGen/X86/longlong-deadload.ll

15 lines
375 B
LLVM
Raw Normal View History

FileCheck-ize a test that had the strangest TCL quote I've seen yet: an opening single quote with no closing single quote, and with {} quotes "inside" of it. This broke some of our tools that scrape test cases. Also, while here, make the test actually assert what the comment says it asserts. This was essentially authored by Nick Lewycky, and merely typed in by myself. Let me know if this is still missing the mark, but the previous test only succeeded due to the improper quoting preventing *anything* from matching the grep -- it had a '4(%...)' sequence in the output! llvm-svn: 133980
2011-06-28 10:03:10 +08:00
; RUN: llc < %s -march=x86 | FileCheck %s
Make load->store deletion a bit smarter. This allows us to compile this: void test(long long *P) { *P ^= 1; } into just: _test: movl 4(%esp), %eax xorl $1, (%eax) ret instead of code like this: _test: movl 4(%esp), %ecx xorl $1, (%ecx) movl 4(%ecx), %edx movl %edx, 4(%ecx) ret llvm-svn: 45762
2008-01-09 07:08:06 +08:00
; This should not load or store the top part of *P.
define void @test(i64* %P) nounwind {
FileCheck-ize a test that had the strangest TCL quote I've seen yet: an opening single quote with no closing single quote, and with {} quotes "inside" of it. This broke some of our tools that scrape test cases. Also, while here, make the test actually assert what the comment says it asserts. This was essentially authored by Nick Lewycky, and merely typed in by myself. Let me know if this is still missing the mark, but the previous test only succeeded due to the improper quoting preventing *anything* from matching the grep -- it had a '4(%...)' sequence in the output! llvm-svn: 133980
2011-06-28 10:03:10 +08:00
; CHECK: test:
; CHECK: movl 4(%esp), %[[REGISTER:.*]]
; CHECK-NOT: 4(%[[REGISTER]])
; CHECK: ret
Make load->store deletion a bit smarter. This allows us to compile this: void test(long long *P) { *P ^= 1; } into just: _test: movl 4(%esp), %eax xorl $1, (%eax) ret instead of code like this: _test: movl 4(%esp), %ecx xorl $1, (%ecx) movl 4(%ecx), %edx movl %edx, 4(%ecx) ret llvm-svn: 45762
2008-01-09 07:08:06 +08:00
%tmp1 = load i64* %P, align 8 ; <i64> [#uses=1]
%tmp2 = xor i64 %tmp1, 1 ; <i64> [#uses=1]
store i64 %tmp2, i64* %P, align 8
ret void
}