target triple = "x86_64-unknown-linux-gnu"
define i32 @test1(i32 %a, i32 %b, i32 %c) nounwind {
-; CHECK: @test1
+; CHECK-LABEL: @test1(
entry:
%tmp1 = icmp eq i32 %b, 0
br i1 %tmp1, label %bb1, label %bb3
declare i8 @llvm.cttz.i8(i8, i1)
define i8 @test2(i8 %a) {
-; CHECK: @test2
+; CHECK-LABEL: @test2(
br i1 undef, label %bb_true, label %bb_false
bb_true:
%b = tail call i8 @llvm.cttz.i8(i8 %a, i1 false)
ret i8 %c
}
-define i8* @test3(i1* %dummy, i8* %a, i8* %b) {
-; Test that a weird, unfolded constant cast in the PHI don't block speculation.
-; CHECK: @test3
-
-entry:
- %cond1 = load volatile i1* %dummy
- br i1 %cond1, label %if, label %end
-
-if:
- %cond2 = load volatile i1* %dummy
- br i1 %cond2, label %then, label %end
-
-then:
- br label %end
-
-end:
- %x = phi i8* [ %a, %entry ], [ %b, %if ], [ inttoptr (i64 42 to i8*), %then ]
-; CHECK-NOT: phi
-; CHECK: select i1 %cond2, i8* inttoptr
-
- ret i8* %x
-}
-
define i8* @test4(i1* %dummy, i8* %a, i8* %b) {
; Test that we don't speculate an arbitrarily large number of unfolded constant
; expressions.
-; CHECK: @test4
+; CHECK-LABEL: @test4(
entry:
%cond1 = load volatile i1* %dummy
ret i8* %x10
}
-
-define i16 @test5(i1* %dummy, i16 %a, i16 %b) {
-; Test that we speculate no-op instructions.
-; CHECK: @test5
-
-entry:
- %cond1 = load volatile i1* %dummy
- br i1 %cond1, label %if, label %end
-
-if:
- %cond2 = load volatile i1* %dummy
- %a.conv = sext i16 %a to i32
- %b.conv = sext i16 %b to i32
- %cmp = icmp ult i32 %a.conv, %b.conv
- br i1 %cond2, label %then, label %end
-
-then:
- %sub = sub i32 %a.conv, %b.conv
- %sub.conv = trunc i32 %sub to i16
- br label %end
-
-end:
- %x = phi i16 [ %a, %entry ], [ %b, %if ], [ %sub.conv, %then ]
-; CHECK-NOT: phi
-; CHECK: select i1
-
- ret i16 %x
-}
-