227 lines
7.6 KiB
LLVM
227 lines
7.6 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
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; RUN: llc -mtriple=i686-- -verify-machineinstrs < %s | FileCheck %s
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; A test for asm-goto output
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define i32 @test1(i32 %x) {
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; CHECK-LABEL: test1:
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; CHECK: # %bb.0: # %entry
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; CHECK-NEXT: movl {{[0-9]+}}(%esp), %eax
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; CHECK-NEXT: addl $4, %eax
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; CHECK-NEXT: #APP
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; CHECK-NEXT: xorl %eax, %eax
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; CHECK-NEXT: jmp .LBB0_2
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; CHECK-NEXT: #NO_APP
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; CHECK-NEXT: # %bb.1: # %normal
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; CHECK-NEXT: retl
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; CHECK-NEXT: .LBB0_2: # Block address taken
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; CHECK-NEXT: # %abnormal
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; CHECK-NEXT: # Label of block must be emitted
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; CHECK-NEXT: movl $1, %eax
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; CHECK-NEXT: retl
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entry:
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%add = add nsw i32 %x, 4
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%ret = callbr i32 asm "xorl $1, $0; jmp ${2:l}", "=r,r,!i"(i32 %add)
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to label %normal [label %abnormal]
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normal:
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ret i32 %ret
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abnormal:
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ret i32 1
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}
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define i32 @test2(i32 %out1, i32 %out2) nounwind {
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; CHECK-LABEL: test2:
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; CHECK: # %bb.0: # %entry
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; CHECK-NEXT: pushl %edi
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; CHECK-NEXT: pushl %esi
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; CHECK-NEXT: movl {{[0-9]+}}(%esp), %edi
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; CHECK-NEXT: movl {{[0-9]+}}(%esp), %esi
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; CHECK-NEXT: movl $-1, %eax
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; CHECK-NEXT: cmpl %edi, %esi
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; CHECK-NEXT: jge .LBB1_2
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; CHECK-NEXT: # %bb.1: # %if.then
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; CHECK-NEXT: #APP
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; CHECK-NEXT: testl %esi, %esi
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; CHECK-NEXT: testl %edi, %esi
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; CHECK-NEXT: jne .LBB1_4
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; CHECK-NEXT: #NO_APP
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; CHECK-NEXT: jmp .LBB1_3
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; CHECK-NEXT: .LBB1_2: # %if.else
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; CHECK-NEXT: #APP
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; CHECK-NEXT: testl %esi, %edi
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; CHECK-NEXT: testl %esi, %edi
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; CHECK-NEXT: jne .LBB1_5
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; CHECK-NEXT: #NO_APP
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; CHECK-NEXT: .LBB1_3:
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; CHECK-NEXT: movl %esi, %eax
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; CHECK-NEXT: addl %edi, %eax
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; CHECK-NEXT: .LBB1_5: # Block address taken
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; CHECK-NEXT: # %return
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; CHECK-NEXT: # Label of block must be emitted
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; CHECK-NEXT: popl %esi
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; CHECK-NEXT: popl %edi
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; CHECK-NEXT: retl
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; CHECK-NEXT: .LBB1_4: # Block address taken
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; CHECK-NEXT: # %label_true
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; CHECK-NEXT: # Label of block must be emitted
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; CHECK-NEXT: movl $-2, %eax
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; CHECK-NEXT: jmp .LBB1_5
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entry:
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%cmp = icmp slt i32 %out1, %out2
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br i1 %cmp, label %if.then, label %if.else
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if.then: ; preds = %entry
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%0 = callbr { i32, i32 } asm sideeffect "testl $0, $0; testl $1, $2; jne ${3:l}", "={si},={di},r,!i,!i,0,1"(i32 %out1, i32 %out1, i32 %out2)
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to label %if.end [label %label_true, label %return]
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if.else: ; preds = %entry
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%1 = callbr { i32, i32 } asm sideeffect "testl $0, $1; testl $2, $3; jne ${5:l}", "={si},={di},r,r,!i,!i,0,1"(i32 %out1, i32 %out2, i32 %out1, i32 %out2)
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to label %if.end [label %label_true, label %return]
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if.end: ; preds = %if.else, %if.then
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%.sink11 = phi { i32, i32 } [ %0, %if.then ], [ %1, %if.else ]
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%asmresult3 = extractvalue { i32, i32 } %.sink11, 0
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%asmresult4 = extractvalue { i32, i32 } %.sink11, 1
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%add = add nsw i32 %asmresult4, %asmresult3
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br label %return
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label_true: ; preds = %if.else, %if.then
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br label %return
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return: ; preds = %if.then, %if.else, %label_true, %if.end
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%retval.0 = phi i32 [ %add, %if.end ], [ -2, %label_true ], [ -1, %if.else ], [ -1, %if.then ]
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ret i32 %retval.0
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}
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define i32 @test3(i1 %cmp) nounwind {
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; CHECK-LABEL: test3:
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; CHECK: # %bb.0: # %entry
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; CHECK-NEXT: pushl %edi
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; CHECK-NEXT: pushl %esi
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; CHECK-NEXT: testb $1, {{[0-9]+}}(%esp)
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; CHECK-NEXT: je .LBB2_3
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; CHECK-NEXT: # %bb.1: # %true
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; CHECK-NEXT: #APP
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; CHECK-NEXT: .short %esi
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; CHECK-NEXT: .short %edi
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; CHECK-NEXT: #NO_APP
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; CHECK-NEXT: # %bb.2:
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; CHECK-NEXT: movl %edi, %eax
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; CHECK-NEXT: jmp .LBB2_5
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; CHECK-NEXT: .LBB2_3: # %false
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; CHECK-NEXT: #APP
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; CHECK-NEXT: .short %eax
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; CHECK-NEXT: .short %edx
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; CHECK-NEXT: #NO_APP
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; CHECK-NEXT: # %bb.4:
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; CHECK-NEXT: movl %edx, %eax
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; CHECK-NEXT: .LBB2_5: # %asm.fallthrough
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; CHECK-NEXT: popl %esi
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; CHECK-NEXT: popl %edi
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; CHECK-NEXT: retl
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; CHECK-NEXT: .LBB2_6: # Block address taken
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; CHECK-NEXT: # %indirect
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; CHECK-NEXT: # Label of block must be emitted
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; CHECK-NEXT: movl $42, %eax
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; CHECK-NEXT: jmp .LBB2_5
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entry:
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br i1 %cmp, label %true, label %false
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true:
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%0 = callbr { i32, i32 } asm sideeffect ".word $0, $1", "={si},={di},!i" () to label %asm.fallthrough [label %indirect]
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false:
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%1 = callbr { i32, i32 } asm sideeffect ".word $0, $1", "={ax},={dx},!i" () to label %asm.fallthrough [label %indirect]
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asm.fallthrough:
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%vals = phi { i32, i32 } [ %0, %true ], [ %1, %false ]
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%v = extractvalue { i32, i32 } %vals, 1
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ret i32 %v
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indirect:
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ret i32 42
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}
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; Test 4 - asm-goto with output constraints.
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define i32 @test4(i32 %out1, i32 %out2) {
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; CHECK-LABEL: test4:
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; CHECK: # %bb.0: # %entry
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; CHECK-NEXT: movl $-1, %eax
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; CHECK-NEXT: movl {{[0-9]+}}(%esp), %ecx
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; CHECK-NEXT: #APP
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; CHECK-NEXT: testl %ecx, %ecx
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; CHECK-NEXT: testl %edx, %ecx
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; CHECK-NEXT: jne .LBB3_3
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; CHECK-NEXT: #NO_APP
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; CHECK-NEXT: # %bb.1: # %asm.fallthrough
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; CHECK-NEXT: #APP
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; CHECK-NEXT: testl %ecx, %edx
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; CHECK-NEXT: testl %ecx, %edx
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; CHECK-NEXT: jne .LBB3_4
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; CHECK-NEXT: #NO_APP
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; CHECK-NEXT: # %bb.2: # %asm.fallthrough2
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; CHECK-NEXT: addl %edx, %ecx
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; CHECK-NEXT: movl %ecx, %eax
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; CHECK-NEXT: .LBB3_4: # Block address taken
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; CHECK-NEXT: # %return
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; CHECK-NEXT: # Label of block must be emitted
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; CHECK-NEXT: retl
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; CHECK-NEXT: .LBB3_3: # Block address taken
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; CHECK-NEXT: # %label_true
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; CHECK-NEXT: # Label of block must be emitted
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; CHECK-NEXT: movl $-2, %eax
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; CHECK-NEXT: jmp .LBB3_4
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entry:
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%0 = callbr { i32, i32 } asm sideeffect "testl $0, $0; testl $1, $2; jne ${3:l}", "=r,=r,r,!i,!i"(i32 %out1)
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to label %asm.fallthrough [label %label_true, label %return]
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asm.fallthrough: ; preds = %entry
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%asmresult = extractvalue { i32, i32 } %0, 0
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%asmresult1 = extractvalue { i32, i32 } %0, 1
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%1 = callbr { i32, i32 } asm sideeffect "testl $0, $1; testl $2, $3; jne ${5:l}", "=r,=r,r,r,!i,!i"(i32 %asmresult, i32 %asmresult1)
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to label %asm.fallthrough2 [label %label_true, label %return]
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asm.fallthrough2: ; preds = %asm.fallthrough
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%asmresult3 = extractvalue { i32, i32 } %1, 0
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%asmresult4 = extractvalue { i32, i32 } %1, 1
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%add = add nsw i32 %asmresult3, %asmresult4
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br label %return
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label_true: ; preds = %asm.fallthrough, %entry
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br label %return
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return: ; preds = %entry, %asm.fallthrough, %label_true, %asm.fallthrough2
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%retval.0 = phi i32 [ %add, %asm.fallthrough2 ], [ -2, %label_true ], [ -1, %asm.fallthrough ], [ -1, %entry ]
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ret i32 %retval.0
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}
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; Test5 - test that we don't rely on a positional constraint. ie. +r in
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; GCCAsmStmt being turned into "={esp},0" since after D87279 they're turned
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; into "={esp},{esp}". This previously caused an ICE; this test is more so
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; about avoiding another ICE than what the actual output is.
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define dso_local void @test5() {
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; CHECK-LABEL: test5:
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; CHECK: # %bb.0:
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; CHECK-NEXT: #APP
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; CHECK-NEXT: #NO_APP
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; CHECK-NEXT: .LBB4_1: # Block address taken
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; CHECK-NEXT: # Label of block must be emitted
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; CHECK-NEXT: retl
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%1 = call i32 @llvm.read_register.i32(metadata !3)
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%2 = callbr i32 asm "", "={esp},!i,{esp}"(i32 %1)
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to label %3 [label %4]
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3:
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call void @llvm.write_register.i32(metadata !3, i32 %2)
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br label %4
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4:
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ret void
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}
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declare i32 @llvm.read_register.i32(metadata)
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declare void @llvm.write_register.i32(metadata, i32)
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!3 = !{!"esp"}
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