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| author | Evan Cheng <evan.cheng@apple.com> | 2011-01-03 22:53:22 +0000 |
|---|---|---|
| committer | Evan Cheng <evan.cheng@apple.com> | 2011-01-03 22:53:22 +0000 |
| commit | 7158e08b8e619f4dcac9834c57f5f8afd6eea2eb (patch) | |
| tree | 49f3021d388b4d92ceeace2b7b648696c88a8bfe /test/CodeGen/X86/tailcall-largecode.ll | |
| parent | fd1ed5f4c4afebf312ecb708280686c49a7d8839 (diff) | |
| download | external_llvm-7158e08b8e619f4dcac9834c57f5f8afd6eea2eb.zip external_llvm-7158e08b8e619f4dcac9834c57f5f8afd6eea2eb.tar.gz external_llvm-7158e08b8e619f4dcac9834c57f5f8afd6eea2eb.tar.bz2 | |
Use pushq / popq instead of subq $8, %rsp / addq $8, %rsp to adjust stack in
prologue and epilogue if the adjustment is 8. Similarly, use pushl / popl if
the adjustment is 4 in 32-bit mode.
In the epilogue, takes care to pop to a caller-saved register that's not live
at the exit (either return or tailcall instruction).
rdar://8771137
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122783 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test/CodeGen/X86/tailcall-largecode.ll')
| -rw-r--r-- | test/CodeGen/X86/tailcall-largecode.ll | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/test/CodeGen/X86/tailcall-largecode.ll b/test/CodeGen/X86/tailcall-largecode.ll index c7070f2..c3f4278 100644 --- a/test/CodeGen/X86/tailcall-largecode.ll +++ b/test/CodeGen/X86/tailcall-largecode.ll @@ -17,7 +17,7 @@ define fastcc i32 @indirect_manyargs(i32(i32,i32,i32,i32,i32,i32,i32)* %target) ; Adjust the stack to enter the function. (The amount of the ; adjustment may change in the future, in which case the location of ; the stack argument and the return adjustment will change too.) -; CHECK: subq $8, %rsp +; CHECK: pushq ; Put the call target into R11, which won't be clobbered while restoring ; callee-saved registers and won't be used for passing arguments. ; CHECK: movq %rdi, %rax @@ -31,7 +31,7 @@ define fastcc i32 @indirect_manyargs(i32(i32,i32,i32,i32,i32,i32,i32)* %target) ; CHECK: movl $5, %r8d ; CHECK: movl $6, %r9d ; Adjust the stack to "return". -; CHECK: addq $8, %rsp +; CHECK: popq ; And tail-call to the target. ; CHECK: jmpq *%rax # TAILCALL %res = tail call fastcc i32 %target(i32 1, i32 2, i32 3, i32 4, i32 5, @@ -46,7 +46,7 @@ define fastcc i32 @direct_manyargs() { ; Adjust the stack to enter the function. (The amount of the ; adjustment may change in the future, in which case the location of ; the stack argument and the return adjustment will change too.) -; CHECK: subq $8, %rsp +; CHECK: pushq ; Pass the stack argument. ; CHECK: movl $7, 16(%rsp) ; Pass the register arguments, in the right registers. @@ -62,7 +62,7 @@ define fastcc i32 @direct_manyargs() { ; arguments. ; CHECK: movabsq $manyargs_callee, %rax ; Adjust the stack to "return". -; CHECK: addq $8, %rsp +; CHECK: popq ; And tail-call to the target. ; CHECK: jmpq *%rax # TAILCALL %res = tail call fastcc i32 @manyargs_callee(i32 1, i32 2, i32 3, i32 4, |