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Diffstat (limited to 'test/CodeGen/SystemZ/int-cmp-50.ll')
-rw-r--r-- | test/CodeGen/SystemZ/int-cmp-50.ll | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/test/CodeGen/SystemZ/int-cmp-50.ll b/test/CodeGen/SystemZ/int-cmp-50.ll new file mode 100644 index 000000000000..287ac2c49a78 --- /dev/null +++ b/test/CodeGen/SystemZ/int-cmp-50.ll @@ -0,0 +1,30 @@ +; Verify that we do not crash on always-true conditions +; +; RUN: llc < %s -mtriple=s390x-linux-gnu -mcpu=z10 -O0 +; +; This test was compiled using clang -O0 from the following source code: +; +; int test(unsigned long x) +; { +; return x >= 0 && x <= 15; +; } + +define signext i32 @test(i64 %x) { +entry: + %x.addr = alloca i64, align 8 + store i64 %x, i64* %x.addr, align 8 + %0 = load i64, i64* %x.addr, align 8 + %cmp = icmp uge i64 %0, 0 + br i1 %cmp, label %land.rhs, label %land.end + +land.rhs: ; preds = %entry + %1 = load i64, i64* %x.addr, align 8 + %cmp1 = icmp ule i64 %1, 15 + br label %land.end + +land.end: ; preds = %land.rhs, %entry + %2 = phi i1 [ false, %entry ], [ %cmp1, %land.rhs ] + %land.ext = zext i1 %2 to i32 + ret i32 %land.ext +} + |