llvm-6502/test/CodeGen/X86/licm-symbol.ll
Evan Cheng 7158e08b8e 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
2011-01-03 22:53:22 +00:00

40 lines
1.6 KiB
LLVM

; RUN: llc < %s | FileCheck %s
; MachineLICM should be able to hoist the sF reference out of the loop.
; CHECK: pushl %esi
; CHECK: pushl
; CHECK: movl $176, %esi
; CHECK: addl L___sF$non_lazy_ptr, %esi
; CHECK: .align 4, 0x90
target datalayout = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:64:64-v128:128:128-a0:0:64-f80:128:128-n8:16:32"
target triple = "i386-apple-darwin8"
%struct.FILE = type { i8*, i32, i32, i16, i16, %struct.__sbuf, i32, i8*, i32 (i8*)*, i32 (i8*, i8*, i32)*, i64 (i8*, i64, i32)*, i32 (i8*, i8*, i32)*, %struct.__sbuf, %struct.__sFILEX*, i32, [3 x i8], [1 x i8], %struct.__sbuf, i32, i64 }
%struct.__sFILEX = type opaque
%struct.__sbuf = type { i8*, i32 }
%struct.gcov_ctr_summary = type { i32, i32, i64, i64, i64 }
%struct.gcov_summary = type { i32, [1 x %struct.gcov_ctr_summary] }
@__sF = external global [0 x %struct.FILE] ; <[0 x %struct.FILE]*> [#uses=1]
declare i32 @fprintf(%struct.FILE* nocapture) nounwind
define void @gcov_exit() nounwind {
entry:
br label %bb151
bb151: ; preds = %bb59, %bb56, %bb14
br i1 undef, label %bb56, label %bb59
bb56: ; preds = %bb151
%t0 = call i32 (%struct.FILE*)* @fprintf(%struct.FILE* getelementptr inbounds ([0 x %struct.FILE]* @__sF, i32 0, i32 2)) nounwind
br label %bb151
bb59: ; preds = %bb151
%t1 = call i32 (%struct.FILE*)* @fprintf(%struct.FILE* getelementptr inbounds ([0 x %struct.FILE]* @__sF, i32 0, i32 2)) nounwind
br label %bb151
}