llvm-mirror/test/CodeGen/Thumb2/thumb2-cbnz.ll

; RUN: llc < %s -mtriple=thumbv7-apple-darwin -mcpu=cortex-a8 | FileCheck %s
; rdar://7354379

declare double @floor(double) nounwind readnone

define void @t(i1 %a, double %b) {
entry:
  br i1 %a, label %bb3, label %bb1

bb1:                                              ; preds = %entry
  unreachable

bb3:                                              ; preds = %entry
  br i1 %a, label %bb7, label %bb5

bb5:                                              ; preds = %bb3
  unreachable

bb7:                                              ; preds = %bb3
  br i1 %a, label %bb11, label %bb9

bb9:                                              ; preds = %bb7
; CHECK:      cmp r0, #0
; CHECK-NEXT: cmp r0, #0
; CHECK-NEXT: cbnz
  %0 = tail call  double @floor(double %b) nounwind readnone ; <double> [#uses=0]
  br label %bb11

bb11:                                             ; preds = %bb9, %bb7
  %1 = getelementptr i32* undef, i32 0
  store i32 0, i32* %1
  ret void
}
Use cbz and cbnz instructions. llvm-svn: 85698 2009-11-01 00:46:45 +01:00			`; RUN: llc < %s -mtriple=thumbv7-apple-darwin -mcpu=cortex-a8 \| FileCheck %s`
			`; rdar://7354379`

Remove arm_apcscc from the test files. It is the default and doing this matches what llvm-gcc and clang now produce. llvm-svn: 106221 2010-06-17 17:18:27 +02:00			`declare double @floor(double) nounwind readnone`
Use cbz and cbnz instructions. llvm-svn: 85698 2009-11-01 00:46:45 +01:00
			`define void @t(i1 %a, double %b) {`
			`entry:`
			`br i1 %a, label %bb3, label %bb1`

			`bb1: ; preds = %entry`
			`unreachable`

			`bb3: ; preds = %entry`
			`br i1 %a, label %bb7, label %bb5`

			`bb5: ; preds = %bb3`
			`unreachable`

			`bb7: ; preds = %bb3`
			`br i1 %a, label %bb11, label %bb9`

			`bb9: ; preds = %bb7`
Add support for tail duplication to BranchFolding, and extend tail merging support to handle more cases. - Recognize several cases where tail merging is beneficial even when the tail size is smaller than the generic threshold. - Make use of MachineInstrDesc::isBarrier to help detect non-fallthrough blocks. - Check for and avoid disrupting fall-through edges in more cases. llvm-svn: 86871 2009-11-11 20:48:59 +01:00			`; CHECK: cmp r0, #0`
			`; CHECK-NEXT: cmp r0, #0`
Fix tests. llvm-svn: 85723 2009-11-01 19:13:29 +01:00			`; CHECK-NEXT: cbnz`
Remove arm_apcscc from the test files. It is the default and doing this matches what llvm-gcc and clang now produce. llvm-svn: 106221 2010-06-17 17:18:27 +02:00			`%0 = tail call double @floor(double %b) nounwind readnone ; <double> [#uses=0]`
Use cbz and cbnz instructions. llvm-svn: 85698 2009-11-01 00:46:45 +01:00			`br label %bb11`

			`bb11: ; preds = %bb9, %bb7`
			`%1 = getelementptr i32* undef, i32 0`
			`store i32 0, i32* %1`
			`ret void`
			`}`