diff options
| author | Dimitry Andric <dim@FreeBSD.org> | 2013-12-22 00:04:03 +0000 |
|---|---|---|
| committer | Dimitry Andric <dim@FreeBSD.org> | 2013-12-22 00:04:03 +0000 |
| commit | f8af5cf600354830d4ccf59732403f0f073eccb9 (patch) | |
| tree | 2ba0398b4c42ad4f55561327538044fd2c925a8b /test/CodeGen/SystemZ/strcmp-02.ll | |
| parent | 59d6cff90eecf31cb3dd860c4e786674cfdd42eb (diff) | |
Notes
Diffstat (limited to 'test/CodeGen/SystemZ/strcmp-02.ll')
| -rw-r--r-- | test/CodeGen/SystemZ/strcmp-02.ll | 72 |
1 files changed, 72 insertions, 0 deletions
diff --git a/test/CodeGen/SystemZ/strcmp-02.ll b/test/CodeGen/SystemZ/strcmp-02.ll new file mode 100644 index 000000000000..27bd00b47fd3 --- /dev/null +++ b/test/CodeGen/SystemZ/strcmp-02.ll @@ -0,0 +1,72 @@ +; Test strcmp using CLST, i64 version. +; +; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s + +declare i64 @strcmp(i8 *%src1, i8 *%src2) + +; Check a case where the result is used as an integer. +define i64 @f1(i8 *%src1, i8 *%src2) { +; CHECK-LABEL: f1: +; CHECK: lhi %r0, 0 +; CHECK: [[LABEL:\.[^:]*]]: +; CHECK: clst %r2, %r3 +; CHECK-NEXT: jo [[LABEL]] +; CHECK-NEXT: BB#{{[0-9]+}} +; CHECK-NEXT: ipm [[REG:%r[0-5]]] +; CHECK: srl [[REG]], 28 +; CHECK: rll [[REG]], [[REG]], 31 +; CHECK: lgfr %r2, [[REG]] +; CHECK: br %r14 + %res = call i64 @strcmp(i8 *%src1, i8 *%src2) + ret i64 %res +} + +; Check a case where the result is tested for equality. +define void @f2(i8 *%src1, i8 *%src2, i64 *%dest) { +; CHECK-LABEL: f2: +; CHECK: lhi %r0, 0 +; CHECK: [[LABEL:\.[^:]*]]: +; CHECK: clst %r2, %r3 +; CHECK-NEXT: jo [[LABEL]] +; CHECK-NEXT: BB#{{[0-9]+}} +; CHECK-NEXT: je {{\.L.*}} +; CHECK: br %r14 + %res = call i64 @strcmp(i8 *%src1, i8 *%src2) + %cmp = icmp eq i64 %res, 0 + br i1 %cmp, label %exit, label %store + +store: + store i64 0, i64 *%dest + br label %exit + +exit: + ret void +} + +; Test a case where the result is used both as an integer and for +; branching. +define i64 @f3(i8 *%src1, i8 *%src2, i64 *%dest) { +; CHECK-LABEL: f3: +; CHECK: lhi %r0, 0 +; CHECK: [[LABEL:\.[^:]*]]: +; CHECK: clst %r2, %r3 +; CHECK-NEXT: jo [[LABEL]] +; CHECK-NEXT: BB#{{[0-9]+}} +; CHECK-NEXT: ipm [[REG:%r[0-5]]] +; CHECK: srl [[REG]], 28 +; CHECK: rll [[REG]], [[REG]], 31 +; CHECK: lgfr %r2, [[REG]] +; CHECK: jl {{\.L*}} +; CHECK: br %r14 +entry: + %res = call i64 @strcmp(i8 *%src1, i8 *%src2) + %cmp = icmp slt i64 %res, 0 + br i1 %cmp, label %exit, label %store + +store: + store i64 0, i64 *%dest + br label %exit + +exit: + ret i64 %res +} |