90 lines
2.6 KiB
LLVM
90 lines
2.6 KiB
LLVM
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; RUN: llc %s -o - | FileCheck %s
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target triple = "thumbv7-apple-ios"
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declare i32 @llvm.eh.sjlj.setjmp(i8*)
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declare void @llvm.eh.sjlj.longjmp(i8*)
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declare i8* @llvm.frameaddress(i32)
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declare i8* @llvm.stacksave()
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@g = external global i32
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; CHECK-LABEL: double_foobar
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;
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; setjmp sequence:
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; CHECK: mov [[PCREG:r[0-9]+]], pc
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; CHECK-NEXT: adds [[PCREG]], [[PCREG]], #7
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; CHECK-NEXT: str [[PCREG]], {{\[}}[[BUFREG:r[0-9]+]], #4]
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; CHECK-NEXT: movs r0, #0
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; CHECK-NEXT: b [[LABEL:L[a-zA-Z0-9]+]]
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; CHECK-NEXT: movs r0, #1
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; CHECK-NEXT: [[LABEL]]:
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;
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; setjmp sequence 2:
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; CHECK: mov [[PCREG:r[0-9]+]], pc
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; CHECK-NEXT: adds [[PCREG]], [[PCREG]], #7
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; CHECK-NEXT: str [[PCREG]], {{\[}}[[BUFREG:r[0-9]+]], #4]
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; CHECK-NEXT: movs r0, #0
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; CHECK-NEXT: b [[LABEL:L[a-zA-Z0-9]+]]
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; CHECK-NEXT: movs r0, #1
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; CHECK-NEXT: [[LABEL]]:
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; longjmp sequence:
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; CHECK: ldr [[TEMPREG:r[0-9]+]], [{{\s*}}[[BUFREG:r[0-9]+]], #8]
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; CHECK-NEXT: mov sp, [[TEMPREG]]
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; CHECK-NEXT: ldr [[DESTREG:r[0-9]+]], {{\[}}[[BUFREG]], #4]
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; CHECK-NEXT: ldr r7, {{\[}}[[BUFREG]]{{\]}}
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; CHECK-NEXT: bx [[DESTREG]]
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;
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; longjmp sequence2:
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; CHECK: ldr [[TEMPREG:r[0-9]+]], [{{\s*}}[[BUFREG:r[0-9]+]], #8]
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; CHECK-NEXT: mov sp, [[TEMPREG]]
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; CHECK-NEXT: ldr [[DESTREG:r[0-9]+]], {{\[}}[[BUFREG]], #4]
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; CHECK-NEXT: ldr r7, {{\[}}[[BUFREG]]{{\]}}
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; CHECK-NEXT: bx [[DESTREG]]
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define void @double_foobar() {
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entry:
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%buf = alloca [5 x i8*], align 4
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%bufptr = bitcast [5 x i8*]* %buf to i8*
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%arraydecay = getelementptr inbounds [5 x i8*], [5 x i8*]* %buf, i32 0, i32 0
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%fa = tail call i8* @llvm.frameaddress(i32 0)
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store i8* %fa, i8** %arraydecay, align 4
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%ss = tail call i8* @llvm.stacksave()
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%ssgep = getelementptr [5 x i8*], [5 x i8*]* %buf, i32 0, i32 2
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store i8* %ss, i8** %ssgep, align 4
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%setjmpres = call i32 @llvm.eh.sjlj.setjmp(i8* %bufptr)
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%tobool = icmp ne i32 %setjmpres, 0
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br i1 %tobool, label %if.then, label %if.else
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if.then:
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store volatile i32 1, i32* @g, align 4
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br label %if.end
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if.else:
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store volatile i32 0, i32* @g, align 4
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call void @llvm.eh.sjlj.longjmp(i8* %bufptr)
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unreachable
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if.end:
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%fa2 = tail call i8* @llvm.frameaddress(i32 0)
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store i8* %fa2, i8** %arraydecay, align 4
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%ss2 = tail call i8* @llvm.stacksave()
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store i8* %ss2, i8** %ssgep, align 4
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%setjmpres2 = call i32 @llvm.eh.sjlj.setjmp(i8* %bufptr)
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%tobool2 = icmp ne i32 %setjmpres2, 0
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br i1 %tobool2, label %if2.then, label %if2.else
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if2.then:
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store volatile i32 3, i32* @g, align 4
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br label %if2.end
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if2.else:
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store volatile i32 2, i32* @g, align 4
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call void @llvm.eh.sjlj.longjmp(i8* %bufptr)
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unreachable
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if2.end:
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ret void
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}
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