PR35812-neg-cmpxchg.ll
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; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
; Make sure that a negative value for the compare-and-swap is zero extended
; from i8/i16 to i32 since it will be compared for equality.
; RUN: llc -mtriple=powerpc64le-linux-gnu -verify-machineinstrs < %s | FileCheck %s
; RUN: llc -mtriple=powerpc64le-linux-gnu -mcpu=pwr7 -verify-machineinstrs < %s | FileCheck %s --check-prefix=CHECK-P7
@str = private unnamed_addr constant [46 x i8] c"FAILED: __atomic_compare_exchange_n() failed.\00"
@str.1 = private unnamed_addr constant [59 x i8] c"FAILED: __atomic_compare_exchange_n() set the wrong value.\00"
@str.2 = private unnamed_addr constant [7 x i8] c"PASSED\00"
define signext i32 @main() nounwind {
; CHECK-LABEL: main:
; CHECK: # %bb.0: # %L.entry
; CHECK-NEXT: mflr 0
; CHECK-NEXT: std 0, 16(1)
; CHECK-NEXT: stdu 1, -48(1)
; CHECK-NEXT: li 3, -32477
; CHECK-NEXT: li 6, 234
; CHECK-NEXT: addi 5, 1, 46
; CHECK-NEXT: sth 3, 46(1)
; CHECK-NEXT: lis 3, 0
; CHECK-NEXT: ori 4, 3, 33059
; CHECK-NEXT: sync
; CHECK-NEXT: .LBB0_1: # %L.entry
; CHECK-NEXT: #
; CHECK-NEXT: lharx 3, 0, 5
; CHECK-NEXT: cmpw 4, 3
; CHECK-NEXT: bne 0, .LBB0_3
; CHECK-NEXT: # %bb.2: # %L.entry
; CHECK-NEXT: #
; CHECK-NEXT: sthcx. 6, 0, 5
; CHECK-NEXT: bne 0, .LBB0_1
; CHECK-NEXT: b .LBB0_4
; CHECK-NEXT: .LBB0_3: # %L.entry
; CHECK-NEXT: sthcx. 3, 0, 5
; CHECK-NEXT: .LBB0_4: # %L.entry
; CHECK-NEXT: cmplwi 3, 33059
; CHECK-NEXT: lwsync
; CHECK-NEXT: bne 0, .LBB0_7
; CHECK-NEXT: # %bb.5: # %L.B0000
; CHECK-NEXT: lhz 3, 46(1)
; CHECK-NEXT: cmplwi 3, 234
; CHECK-NEXT: bne 0, .LBB0_8
; CHECK-NEXT: # %bb.6: # %L.B0001
; CHECK-NEXT: addis 3, 2, .Lstr.2@toc@ha
; CHECK-NEXT: addi 3, 3, .Lstr.2@toc@l
; CHECK-NEXT: bl puts
; CHECK-NEXT: nop
; CHECK-NEXT: li 3, 0
; CHECK-NEXT: b .LBB0_10
; CHECK-NEXT: .LBB0_7: # %L.B0003
; CHECK-NEXT: addis 3, 2, .Lstr@toc@ha
; CHECK-NEXT: addi 3, 3, .Lstr@toc@l
; CHECK-NEXT: b .LBB0_9
; CHECK-NEXT: .LBB0_8: # %L.B0005
; CHECK-NEXT: addis 3, 2, .Lstr.1@toc@ha
; CHECK-NEXT: addi 3, 3, .Lstr.1@toc@l
; CHECK-NEXT: .LBB0_9: # %L.B0003
; CHECK-NEXT: bl puts
; CHECK-NEXT: nop
; CHECK-NEXT: li 3, 1
; CHECK-NEXT: .LBB0_10: # %L.B0003
; CHECK-NEXT: addi 1, 1, 48
; CHECK-NEXT: ld 0, 16(1)
; CHECK-NEXT: mtlr 0
; CHECK-NEXT: blr
;
; CHECK-P7-LABEL: main:
; CHECK-P7: # %bb.0: # %L.entry
; CHECK-P7-NEXT: mflr 0
; CHECK-P7-NEXT: std 0, 16(1)
; CHECK-P7-NEXT: stdu 1, -48(1)
; CHECK-P7-NEXT: li 3, -32477
; CHECK-P7-NEXT: lis 5, 0
; CHECK-P7-NEXT: addi 4, 1, 46
; CHECK-P7-NEXT: li 7, 0
; CHECK-P7-NEXT: sth 3, 46(1)
; CHECK-P7-NEXT: li 6, 234
; CHECK-P7-NEXT: ori 5, 5, 33059
; CHECK-P7-NEXT: rlwinm 3, 4, 3, 27, 27
; CHECK-P7-NEXT: ori 7, 7, 65535
; CHECK-P7-NEXT: sync
; CHECK-P7-NEXT: slw 6, 6, 3
; CHECK-P7-NEXT: slw 8, 5, 3
; CHECK-P7-NEXT: slw 5, 7, 3
; CHECK-P7-NEXT: rldicr 4, 4, 0, 61
; CHECK-P7-NEXT: and 7, 6, 5
; CHECK-P7-NEXT: and 8, 8, 5
; CHECK-P7-NEXT: .LBB0_1: # %L.entry
; CHECK-P7-NEXT: #
; CHECK-P7-NEXT: lwarx 9, 0, 4
; CHECK-P7-NEXT: and 6, 9, 5
; CHECK-P7-NEXT: cmpw 6, 8
; CHECK-P7-NEXT: bne 0, .LBB0_3
; CHECK-P7-NEXT: # %bb.2: # %L.entry
; CHECK-P7-NEXT: #
; CHECK-P7-NEXT: andc 9, 9, 5
; CHECK-P7-NEXT: or 9, 9, 7
; CHECK-P7-NEXT: stwcx. 9, 0, 4
; CHECK-P7-NEXT: bne 0, .LBB0_1
; CHECK-P7-NEXT: b .LBB0_4
; CHECK-P7-NEXT: .LBB0_3: # %L.entry
; CHECK-P7-NEXT: stwcx. 9, 0, 4
; CHECK-P7-NEXT: .LBB0_4: # %L.entry
; CHECK-P7-NEXT: srw 3, 6, 3
; CHECK-P7-NEXT: lwsync
; CHECK-P7-NEXT: cmplwi 3, 33059
; CHECK-P7-NEXT: bne 0, .LBB0_7
; CHECK-P7-NEXT: # %bb.5: # %L.B0000
; CHECK-P7-NEXT: lhz 3, 46(1)
; CHECK-P7-NEXT: cmplwi 3, 234
; CHECK-P7-NEXT: bne 0, .LBB0_8
; CHECK-P7-NEXT: # %bb.6: # %L.B0001
; CHECK-P7-NEXT: addis 3, 2, .Lstr.2@toc@ha
; CHECK-P7-NEXT: addi 3, 3, .Lstr.2@toc@l
; CHECK-P7-NEXT: bl puts
; CHECK-P7-NEXT: nop
; CHECK-P7-NEXT: li 3, 0
; CHECK-P7-NEXT: b .LBB0_10
; CHECK-P7-NEXT: .LBB0_7: # %L.B0003
; CHECK-P7-NEXT: addis 3, 2, .Lstr@toc@ha
; CHECK-P7-NEXT: addi 3, 3, .Lstr@toc@l
; CHECK-P7-NEXT: b .LBB0_9
; CHECK-P7-NEXT: .LBB0_8: # %L.B0005
; CHECK-P7-NEXT: addis 3, 2, .Lstr.1@toc@ha
; CHECK-P7-NEXT: addi 3, 3, .Lstr.1@toc@l
; CHECK-P7-NEXT: .LBB0_9: # %L.B0003
; CHECK-P7-NEXT: bl puts
; CHECK-P7-NEXT: nop
; CHECK-P7-NEXT: li 3, 1
; CHECK-P7-NEXT: .LBB0_10: # %L.B0003
; CHECK-P7-NEXT: addi 1, 1, 48
; CHECK-P7-NEXT: ld 0, 16(1)
; CHECK-P7-NEXT: mtlr 0
; CHECK-P7-NEXT: blr
L.entry:
%value.addr = alloca i16, align 2
store i16 -32477, i16* %value.addr, align 2
%0 = cmpxchg i16* %value.addr, i16 -32477, i16 234 seq_cst seq_cst
%1 = extractvalue { i16, i1 } %0, 1
br i1 %1, label %L.B0000, label %L.B0003
L.B0003: ; preds = %L.entry
%puts = call i32 @puts(i8* getelementptr inbounds ([46 x i8], [46 x i8]* @str, i64 0, i64 0))
ret i32 1
L.B0000: ; preds = %L.entry
%2 = load i16, i16* %value.addr, align 2
%3 = icmp eq i16 %2, 234
br i1 %3, label %L.B0001, label %L.B0005
L.B0005: ; preds = %L.B0000
%puts1 = call i32 @puts(i8* getelementptr inbounds ([59 x i8], [59 x i8]* @str.1, i64 0, i64 0))
ret i32 1
L.B0001: ; preds = %L.B0000
%puts2 = call i32 @puts(i8* getelementptr inbounds ([7 x i8], [7 x i8]* @str.2, i64 0, i64 0))
ret i32 0
}
; Function Attrs: nounwind
declare i32 @puts(i8* nocapture readonly) #0