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llvm-mirror/test/CodeGen/ARM/cmpxchg-weak.ll
Francis Visoiu Mistrih 30264d4391 [CodeGen] Unify MBB reference format in both MIR and debug output
As part of the unification of the debug format and the MIR format, print
MBB references as '%bb.5'.

The MIR printer prints the IR name of a MBB only for block definitions.

* find . \( -name "*.mir" -o -name "*.cpp" -o -name "*.h" -o -name "*.ll" \) -type f -print0 | xargs -0 sed -i '' -E 's/BB#" << ([a-zA-Z0-9_]+)->getNumber\(\)/" << printMBBReference(*\1)/g'
* find . \( -name "*.mir" -o -name "*.cpp" -o -name "*.h" -o -name "*.ll" \) -type f -print0 | xargs -0 sed -i '' -E 's/BB#" << ([a-zA-Z0-9_]+)\.getNumber\(\)/" << printMBBReference(\1)/g'
* find . \( -name "*.txt" -o -name "*.s" -o -name "*.mir" -o -name "*.cpp" -o -name "*.h" -o -name "*.ll" \) -type f -print0 | xargs -0 sed -i '' -E 's/BB#([0-9]+)/%bb.\1/g'
* grep -nr 'BB#' and fix

Differential Revision: https://reviews.llvm.org/D40422

llvm-svn: 319665
2017-12-04 17:18:51 +00:00

60 lines
1.9 KiB
LLVM

; RUN: llc < %s -mtriple=armv7-apple-ios -verify-machineinstrs | FileCheck %s
define void @test_cmpxchg_weak(i32 *%addr, i32 %desired, i32 %new) {
; CHECK-LABEL: test_cmpxchg_weak:
%pair = cmpxchg weak i32* %addr, i32 %desired, i32 %new seq_cst monotonic
%oldval = extractvalue { i32, i1 } %pair, 0
; CHECK-NEXT: %bb.0:
; CHECK-NEXT: ldrex [[LOADED:r[0-9]+]], [r0]
; CHECK-NEXT: cmp [[LOADED]], r1
; CHECK-NEXT: bne [[LDFAILBB:LBB[0-9]+_[0-9]+]]
; CHECK-NEXT: %bb.1:
; CHECK-NEXT: dmb ish
; CHECK-NEXT: strex [[SUCCESS:r[0-9]+]], r2, [r0]
; CHECK-NEXT: cmp [[SUCCESS]], #0
; CHECK-NEXT: beq [[SUCCESSBB:LBB[0-9]+_[0-9]+]]
; CHECK-NEXT: %bb.2:
; CHECK-NEXT: str r3, [r0]
; CHECK-NEXT: bx lr
; CHECK-NEXT: [[LDFAILBB]]:
; CHECK-NEXT: clrex
; CHECK-NEXT: str r3, [r0]
; CHECK-NEXT: bx lr
; CHECK-NEXT: [[SUCCESSBB]]:
; CHECK-NEXT: dmb ish
; CHECK-NEXT: str r3, [r0]
; CHECK-NEXT: bx lr
store i32 %oldval, i32* %addr
ret void
}
define i1 @test_cmpxchg_weak_to_bool(i32, i32 *%addr, i32 %desired, i32 %new) {
; CHECK-LABEL: test_cmpxchg_weak_to_bool:
%pair = cmpxchg weak i32* %addr, i32 %desired, i32 %new seq_cst monotonic
%success = extractvalue { i32, i1 } %pair, 1
; CHECK-NEXT: %bb.0:
; CHECK-NEXT: ldrex [[LOADED:r[0-9]+]], [r1]
; CHECK-NEXT: cmp [[LOADED]], r2
; CHECK-NEXT: bne [[LDFAILBB:LBB[0-9]+_[0-9]+]]
; CHECK-NEXT: %bb.1:
; CHECK-NEXT: dmb ish
; CHECK-NEXT: mov r0, #0
; CHECK-NEXT: strex [[SUCCESS:r[0-9]+]], r3, [r1]
; CHECK-NEXT: cmp [[SUCCESS]], #0
; CHECK-NEXT: bxne lr
; CHECK-NEXT: mov r0, #1
; CHECK-NEXT: dmb ish
; CHECK-NEXT: bx lr
; CHECK-NEXT: [[LDFAILBB]]:
; CHECK-NEXT: mov r0, #0
; CHECK-NEXT: clrex
; CHECK-NEXT: bx lr
ret i1 %success
}