declare void @throwAnExceptionOrWhatever()
-; CHECK: @test1
+; CHECK-LABEL: @test1(
define i32 @test1(i32 %a, i32 %b) nounwind ssp {
entry:
; CHECK-NOT: sext
ret i32 %conv9
}
-; CHECK: @test2
+; CHECK-LABEL: @test2(
; This form should not be promoted for two reasons: 1) it is unprofitable to
; promote it since the add.off instruction has another use, and 2) it is unsafe
; because the add-with-off makes the high bits of the original add live.
; CHECK: ret i64
}
-; CHECK: @test4
+; CHECK-LABEL: @test4(
; Should be able to form an i8 sadd computed in an i32.
define zeroext i8 @test4(i8 signext %a, i8 signext %b) nounwind ssp {
entry:
; CHECK: ret i8
}
-; CHECK: @test5
+; CHECK-LABEL: @test5(
; CHECK: llvm.uadd.with.overflow
; CHECK: ret i64
define i64 @test5(i64 %a, i64 %b) nounwind ssp {
ret i64 %Q
}
-; CHECK: @test6
+; CHECK-LABEL: @test6(
; CHECK: llvm.uadd.with.overflow
; CHECK: ret i64
define i64 @test6(i64 %a, i64 %b) nounwind ssp {
ret i64 %Q
}
-; CHECK: @test7
+; CHECK-LABEL: @test7(
; CHECK: llvm.uadd.with.overflow
; CHECK: ret i64
define i64 @test7(i64 %a, i64 %b) nounwind ssp {
ret i64 %Q
}
+; CHECK-LABEL: @test8(
+; PR11438
+; This is @test1, but the operands are not sign-extended. Make sure
+; we don't transform this case.
+define i32 @test8(i64 %a, i64 %b) nounwind ssp {
+entry:
+; CHECK-NOT: llvm.sadd
+; CHECK: add i64 %a, %b
+; CHECK-NOT: llvm.sadd
+; CHECK: ret
+ %add = add i64 %a, %b
+ %add.off = add i64 %add, 2147483648
+ %0 = icmp ugt i64 %add.off, 4294967295
+ br i1 %0, label %if.then, label %if.end
+
+if.then:
+ tail call void @throwAnExceptionOrWhatever() nounwind
+ br label %if.end
+if.end:
+ %conv9 = trunc i64 %add to i32
+ ret i32 %conv9
+}