diff options
Diffstat (limited to 'test/CodeGen/SystemZ/int-cmp-47.ll')
-rw-r--r-- | test/CodeGen/SystemZ/int-cmp-47.ll | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/test/CodeGen/SystemZ/int-cmp-47.ll b/test/CodeGen/SystemZ/int-cmp-47.ll index dc87284ff5f..3a07ed339bb 100644 --- a/test/CodeGen/SystemZ/int-cmp-47.ll +++ b/test/CodeGen/SystemZ/int-cmp-47.ll @@ -342,3 +342,25 @@ store: exit: ret void } + +; Check that we don't fold a shift if the comparison value +; would need to be shifted out of range +define void @f19(i64 %a) { +; CHECK-LABEL: f19: +; CHECK-NOT: tmhh +; CHECK: srlg [[REG:%r[0-5]]], %r2, 63 +; CHECK: cgibl [[REG]], 3, 0(%r14) +; CHECK: br %r14 +entry: + %shr = lshr i64 %a, 63 + %cmp = icmp ult i64 %shr, 3 + br i1 %cmp, label %exit, label %store + +store: + store i32 1, i32 *@g + br label %exit + +exit: + ret void +} + |