27 lines
828 B
LLVM
27 lines
828 B
LLVM
; RUN: llc -verify-machineinstrs -mtriple=armebv8-linux-gnueabi -O0 %s -o - | FileCheck %s
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@x = global i64 10, align 8
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@y = global i64 20, align 8
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@z = global i64 20, align 8
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; CHECK_LABEL: main:
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; CHECK: ldr [[R2:r[0-9]+]], {{\[}}[[R1:r[0-9]+]]{{\]}}
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; CHECK-NEXT: ldr [[R1]], {{\[}}[[R1]], #4]
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; CHECK: mov [[R4:r[0-9]+]], [[R2]]
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; CHECK-NEXT: mov [[R5:r[0-9]+]], [[R1]]
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; CHECK: ldr [[R2]], {{\[}}[[R1]]{{\]}}
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; CHECK-NEXT: ldr [[R1]], {{\[}}[[R1]], #4]
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; CHECK: mov [[R6:r[0-9]+]], [[R2]]
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; CHECK-NEXT: mov [[R7:r[0-9]+]], [[R1]]
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define arm_aapcs_vfpcc i32 @main() #0 {
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entry:
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%retval = alloca i32, align 4
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store i32 0, i32* %retval, align 4
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%0 = load i64, i64* @z, align 8
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%1 = load i64, i64* @x, align 8
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%2 = cmpxchg i64* @y, i64 %0, i64 %1 seq_cst seq_cst
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%3 = extractvalue { i64, i1 } %2, 1
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ret i32 0
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}
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