diff options
author | Stephen Hines <srhines@google.com> | 2014-05-29 02:49:00 -0700 |
---|---|---|
committer | Stephen Hines <srhines@google.com> | 2014-05-29 02:49:00 -0700 |
commit | dce4a407a24b04eebc6a376f8e62b41aaa7b071f (patch) | |
tree | dcebc53f2b182f145a2e659393bf9a0472cedf23 /test/CodeGen/X86/peep-test-4.ll | |
parent | 220b921aed042f9e520c26cffd8282a94c66c3d5 (diff) | |
download | external_llvm-dce4a407a24b04eebc6a376f8e62b41aaa7b071f.zip external_llvm-dce4a407a24b04eebc6a376f8e62b41aaa7b071f.tar.gz external_llvm-dce4a407a24b04eebc6a376f8e62b41aaa7b071f.tar.bz2 |
Update LLVM for 3.5 rebase (r209712).
Change-Id: I149556c940fb7dc92d075273c87ff584f400941f
Diffstat (limited to 'test/CodeGen/X86/peep-test-4.ll')
-rw-r--r-- | test/CodeGen/X86/peep-test-4.ll | 76 |
1 files changed, 75 insertions, 1 deletions
diff --git a/test/CodeGen/X86/peep-test-4.ll b/test/CodeGen/X86/peep-test-4.ll index 884ee7c..1ae621f 100644 --- a/test/CodeGen/X86/peep-test-4.ll +++ b/test/CodeGen/X86/peep-test-4.ll @@ -1,5 +1,6 @@ -; RUN: llc < %s -mtriple=x86_64-pc-linux -mattr=+bmi,+bmi2,+popcnt | FileCheck %s +; RUN: llc < %s -mtriple=x86_64-pc-linux -mattr=+bmi,+bmi2,+popcnt,+lzcnt | FileCheck %s declare void @foo(i32) +declare void @foo32(i32) declare void @foo64(i64) ; CHECK-LABEL: neg: @@ -189,3 +190,76 @@ bb: return: ret void } + +; CHECK-LABEL: testCTZ +; CHECK: tzcntq +; CHECK-NOT: test +; CHECK: cmovaeq +declare i64 @llvm.cttz.i64(i64, i1) +define i64 @testCTZ(i64 %v) nounwind { + %cnt = tail call i64 @llvm.cttz.i64(i64 %v, i1 true) + %tobool = icmp eq i64 %v, 0 + %cond = select i1 %tobool, i64 255, i64 %cnt + ret i64 %cond +} + +; CHECK-LABEL: testCTZ2 +; CHECK: tzcntl +; CHECK-NEXT: jb +; CHECK: jmp foo +declare i32 @llvm.cttz.i32(i32, i1) +define void @testCTZ2(i32 %v) nounwind { + %cnt = tail call i32 @llvm.cttz.i32(i32 %v, i1 true) + %cmp = icmp eq i32 %v, 0 + br i1 %cmp, label %return, label %bb + +bb: + tail call void @foo(i32 %cnt) + br label %return + +return: + tail call void @foo32(i32 %cnt) + ret void +} + +; CHECK-LABEL: testCTZ3 +; CHECK: tzcntl +; CHECK-NEXT: jae +; CHECK: jmp foo +define void @testCTZ3(i32 %v) nounwind { + %cnt = tail call i32 @llvm.cttz.i32(i32 %v, i1 true) + %cmp = icmp ne i32 %v, 0 + br i1 %cmp, label %return, label %bb + +bb: + tail call void @foo(i32 %cnt) + br label %return + +return: + tail call void @foo32(i32 %cnt) + ret void +} + +; CHECK-LABEL: testCLZ +; CHECK: lzcntq +; CHECK-NOT: test +; CHECK: cmovaeq +declare i64 @llvm.ctlz.i64(i64, i1) +define i64 @testCLZ(i64 %v) nounwind { + %cnt = tail call i64 @llvm.ctlz.i64(i64 %v, i1 true) + %tobool = icmp ne i64 %v, 0 + %cond = select i1 %tobool, i64 %cnt, i64 255 + ret i64 %cond +} + +; CHECK-LABEL: testPOPCNT +; CHECK: popcntq +; CHECK-NOT: test +; CHECK: cmovneq +declare i64 @llvm.ctpop.i64(i64) +define i64 @testPOPCNT(i64 %v) nounwind { + %cnt = tail call i64 @llvm.ctpop.i64(i64 %v) + %tobool = icmp ne i64 %v, 0 + %cond = select i1 %tobool, i64 %cnt, i64 255 + ret i64 %cond +} |