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; RUN: opt < %s -rewrite-pnacl-library-calls -S | FileCheck %s
; RUN: opt < %s -rewrite-pnacl-library-calls -S | FileCheck %s -check-prefix=CLEANED
; Test the RewritePNaClLibraryCalls pass
declare i32 @setjmp(i64*)
declare void @longjmp(i64*, i32)
; No declaration or definition of setjmp() should remain.
; CLEANED-NOT: @setjmp
; Since the address of longjmp is being taken here, a body is generated
; for it, which does a cast and calls an intrinsic
; CHECK: define internal void @longjmp(i64* %env, i32 %val) {
; CHECK: entry:
; CHECK: %jmp_buf_i8 = bitcast i64* %env to i8*
; CHECK: call void @llvm.nacl.longjmp(i8* %jmp_buf_i8, i32 %val)
; CHECK: unreachable
; CHECK: }
define i32 @call_setjmp(i64* %arg) {
; CHECK-NOT: call i32 @setjmp
; CHECK: %jmp_buf_i8 = bitcast i64* %arg to i8*
; CHECK-NEXT: %val = call i32 @llvm.nacl.setjmp(i8* %jmp_buf_i8)
%val = call i32 @setjmp(i64* %arg)
ret i32 %val
}
define void @call_longjmp(i64* %arg, i32 %num) {
; CHECK-NOT: call void @longjmp
; CHECK: %jmp_buf_i8 = bitcast i64* %arg to i8*
; CHECK-NEXT: call void @llvm.nacl.longjmp(i8* %jmp_buf_i8, i32 %num)
call void @longjmp(i64* %arg, i32 %num)
ret void
}
define i32 @takeaddr_longjmp(i64* %arg, i32 %num) {
%fp = alloca void (i64*, i32)*, align 8
; CHECK: store void (i64*, i32)* @longjmp, void (i64*, i32)** %fp
store void (i64*, i32)* @longjmp, void (i64*, i32)** %fp, align 8
ret i32 7
}
; A more complex example with a number of calls in several BBs
define void @multiple_calls(i64* %arg, i32 %num) {
entryblock:
; CHECK: entryblock
; CHECK: bitcast
; CHECK-NEXT: call void @llvm.nacl.longjmp
call void @longjmp(i64* %arg, i32 %num)
br label %block1
block1:
; CHECK: block1
; CHECK: bitcast
; CHECK-NEXT: call void @llvm.nacl.longjmp
call void @longjmp(i64* %arg, i32 %num)
; CHECK: call i32 @llvm.nacl.setjmp
%val = call i32 @setjmp(i64* %arg)
%num2 = add i32 %val, %num
; CHECK: bitcast
; CHECK-NEXT: call void @llvm.nacl.longjmp
call void @longjmp(i64* %arg, i32 %num2)
br label %exitblock
exitblock:
%num3 = add i32 %num, %num
call void @longjmp(i64* %arg, i32 %num3)
%num4 = add i32 %num, %num3
; CHECK: bitcast
; CHECK-NEXT: call void @llvm.nacl.longjmp
call void @longjmp(i64* %arg, i32 %num4)
ret void
}
; CHECK: declare i32 @llvm.nacl.setjmp(i8*)
; CHECK: declare void @llvm.nacl.longjmp(i8*, i32)
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