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| author | Manman Ren <manman.ren@gmail.com> | 2016-01-12 01:08:46 +0000 |
|---|---|---|
| committer | Manman Ren <manman.ren@gmail.com> | 2016-01-12 01:08:46 +0000 |
| commit | ed967f37520fec398aa419514de552e1a917c9ec (patch) | |
| tree | aaaa4eed9cdd440a9ae997dcdf05b87a62906a3a /llvm/test/CodeGen/X86/cxx_tlscc64.ll | |
| parent | 921b04e9a4b9cc854bbefeb644f95fdef9d9dd0c (diff) | |
| download | bcm5719-llvm-ed967f37520fec398aa419514de552e1a917c9ec.tar.gz bcm5719-llvm-ed967f37520fec398aa419514de552e1a917c9ec.zip | |
CXX_FAST_TLS calling convention: performance improvement for x86-64.
This is the same change on x86-64 as r255821 on AArch64.
rdar://9001553
llvm-svn: 257428
Diffstat (limited to 'llvm/test/CodeGen/X86/cxx_tlscc64.ll')
| -rw-r--r-- | llvm/test/CodeGen/X86/cxx_tlscc64.ll | 61 |
1 files changed, 19 insertions, 42 deletions
diff --git a/llvm/test/CodeGen/X86/cxx_tlscc64.ll b/llvm/test/CodeGen/X86/cxx_tlscc64.ll index 16e678a9222..70fe501040b 100644 --- a/llvm/test/CodeGen/X86/cxx_tlscc64.ll +++ b/llvm/test/CodeGen/X86/cxx_tlscc64.ll @@ -2,8 +2,8 @@ ; TLS function were wrongly model and after fixing that, shrink-wrapping ; cannot help here. To achieve the expected lowering, we need to playing ; tricks similar to AArch64 fast TLS calling convention (r255821). -; Re-enable the following run line when -; _RUN_: llc < %s -mtriple=x86_64-apple-darwin -enable-shrink-wrap=true | FileCheck --check-prefix=SHRINK %s +; Applying tricks on x86-64 similar to r255821. +; RUN: llc < %s -mtriple=x86_64-apple-darwin -enable-shrink-wrap=true | FileCheck %s %struct.S = type { i8 } @sg = internal thread_local global %struct.S zeroinitializer, align 1 @@ -16,51 +16,28 @@ declare i32 @_tlv_atexit(void (i8*)*, i8*, i8*) ; Every GPR should be saved - except rdi, rax, and rsp ; CHECK-LABEL: _ZTW2sg -; CHECK: pushq %r11 -; CHECK: pushq %r10 -; CHECK: pushq %r9 -; CHECK: pushq %r8 -; CHECK: pushq %rsi -; CHECK: pushq %rdx -; CHECK: pushq %rcx -; CHECK: pushq %rbx +; CHECK-NOT: pushq %r11 +; CHECK-NOT: pushq %r10 +; CHECK-NOT: pushq %r9 +; CHECK-NOT: pushq %r8 +; CHECK-NOT: pushq %rsi +; CHECK-NOT: pushq %rdx +; CHECK-NOT: pushq %rcx +; CHECK-NOT: pushq %rbx ; CHECK: callq ; CHECK: jne ; CHECK: callq ; CHECK: tlv_atexit ; CHECK: callq -; CHECK: popq %rbx -; CHECK: popq %rcx -; CHECK: popq %rdx -; CHECK: popq %rsi -; CHECK: popq %r8 -; CHECK: popq %r9 -; CHECK: popq %r10 -; CHECK: popq %r11 -; SHRINK-LABEL: _ZTW2sg -; SHRINK: callq -; SHRINK: jne -; SHRINK: pushq %r11 -; SHRINK: pushq %r10 -; SHRINK: pushq %r9 -; SHRINK: pushq %r8 -; SHRINK: pushq %rsi -; SHRINK: pushq %rdx -; SHRINK: pushq %rcx -; SHRINK: pushq %rbx -; SHRINK: callq -; SHRINK: tlv_atexit -; SHRINK: popq %rbx -; SHRINK: popq %rcx -; SHRINK: popq %rdx -; SHRINK: popq %rsi -; SHRINK: popq %r8 -; SHRINK: popq %r9 -; SHRINK: popq %r10 -; SHRINK: popq %r11 -; SHRINK: LBB{{.*}}: -; SHRINK: callq -define cxx_fast_tlscc nonnull %struct.S* @_ZTW2sg() { +; CHECK-NOT: popq %rbx +; CHECK-NOT: popq %rcx +; CHECK-NOT: popq %rdx +; CHECK-NOT: popq %rsi +; CHECK-NOT: popq %r8 +; CHECK-NOT: popq %r9 +; CHECK-NOT: popq %r10 +; CHECK-NOT: popq %r11 +define cxx_fast_tlscc nonnull %struct.S* @_ZTW2sg() nounwind { %.b.i = load i1, i1* @__tls_guard, align 1 br i1 %.b.i, label %__tls_init.exit, label %init.i |
