llvm/test/CodeGen/X86/licm-symbol.ll

; RUN: llc < %s | FileCheck %s

; MachineLICM should be able to hoist the sF reference out of the loop.

; CHECK: pushl %esi
; CHECK: subl  $4, %esp
; 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
}
Don't try to replace physical registers when doing CSE. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97360 91177308-0d34-0410-b5e6-96231b3b80d8 2010-02-28 01:33:43 +00:00			`; RUN: llc < %s \| FileCheck %s`

			`; MachineLICM should be able to hoist the sF reference out of the loop.`

			`; CHECK: pushl %esi`
Make the NDEBUG assertion stronger and more clear what is happening. Enhance scheduling to set the DEAD flag on implicit defs more aggressively. Before, we'd set an implicit def operand to dead if it were present in the SDNode corresponding to the machineinstr but had no use. Now we do it in this case AND if the implicit def does not exist in the SDNode at all. This exposes a couple of problems: one is the FIXME, which causes a live intervals crash on CodeGen/X86/sibcall.ll. The second is that it makes machinecse and licm more aggressive (which is a good thing) but also exposes a case where licm hoists a set0 and then it doesn't get resunk. Talking to codegen folks about both these issues, but I need this patch in in the meantime. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@99485 91177308-0d34-0410-b5e6-96231b3b80d8 2010-03-25 05:40:48 +00:00			`; CHECK: subl $4, %esp`
Don't try to replace physical registers when doing CSE. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97360 91177308-0d34-0410-b5e6-96231b3b80d8 2010-02-28 01:33:43 +00:00			`; 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`
			`}`