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Diffstat (limited to 'test/CodeGen/SystemZ/int-cmp-46.ll')
-rw-r--r-- | test/CodeGen/SystemZ/int-cmp-46.ll | 99 |
1 files changed, 99 insertions, 0 deletions
diff --git a/test/CodeGen/SystemZ/int-cmp-46.ll b/test/CodeGen/SystemZ/int-cmp-46.ll new file mode 100644 index 0000000..b46ca5e --- /dev/null +++ b/test/CodeGen/SystemZ/int-cmp-46.ll @@ -0,0 +1,99 @@ +; Test the use of TEST UNDER MASK for 32-bit operations. +; +; RUN: llc < %s -mtriple=s390x-linux-gnu -mcpu=z196 | FileCheck %s + +@g = global i32 0 + +; Check the lowest useful TMLL value. +define void @f1(i32 %a) { +; CHECK-LABEL: f1: +; CHECK: tmll %r2, 1 +; CHECK: je {{\.L.*}} +; CHECK: br %r14 +entry: + %and = and i32 %a, 1 + %cmp = icmp eq i32 %and, 0 + br i1 %cmp, label %exit, label %store + +store: + store i32 1, i32 *@g + br label %exit + +exit: + ret void +} + +; Check the high end of the TMLL range. +define void @f2(i32 %a) { +; CHECK-LABEL: f2: +; CHECK: tmll %r2, 65535 +; CHECK: jne {{\.L.*}} +; CHECK: br %r14 +entry: + %and = and i32 %a, 65535 + %cmp = icmp ne i32 %and, 0 + br i1 %cmp, label %exit, label %store + +store: + store i32 1, i32 *@g + br label %exit + +exit: + ret void +} + +; Check the lowest useful TMLH value, which is the next value up. +define void @f3(i32 %a) { +; CHECK-LABEL: f3: +; CHECK: tmlh %r2, 1 +; CHECK: jne {{\.L.*}} +; CHECK: br %r14 +entry: + %and = and i32 %a, 65536 + %cmp = icmp ne i32 %and, 0 + br i1 %cmp, label %exit, label %store + +store: + store i32 1, i32 *@g + br label %exit + +exit: + ret void +} + +; Check the next value up again, which cannot use TM. +define void @f4(i32 %a) { +; CHECK-LABEL: f4: +; CHECK-NOT: {{tm[lh].}} +; CHECK: br %r14 +entry: + %and = and i32 %a, 4294901759 + %cmp = icmp eq i32 %and, 0 + br i1 %cmp, label %exit, label %store + +store: + store i32 1, i32 *@g + br label %exit + +exit: + ret void +} + +; Check the high end of the TMLH range. +define void @f5(i32 %a) { +; CHECK-LABEL: f5: +; CHECK: tmlh %r2, 65535 +; CHECK: je {{\.L.*}} +; CHECK: br %r14 +entry: + %and = and i32 %a, 4294901760 + %cmp = icmp eq i32 %and, 0 + br i1 %cmp, label %exit, label %store + +store: + store i32 1, i32 *@g + br label %exit + +exit: + ret void +} |