diff options
| author | Tony Jiang <jtony@ca.ibm.com> | 2017-01-16 20:12:26 +0000 |
|---|---|---|
| committer | Tony Jiang <jtony@ca.ibm.com> | 2017-01-16 20:12:26 +0000 |
| commit | 8e8c444d3ddf2c6ca045a2487070e0ac30a63dda (patch) | |
| tree | 3cecf7ec2710227b67f20fdd8f9f82877b7021bc /llvm/test/CodeGen/PowerPC/fold-zero.ll | |
| parent | 65cce20caaef97b34d38dcf244f4cb2333514ec7 (diff) | |
| download | bcm5719-llvm-8e8c444d3ddf2c6ca045a2487070e0ac30a63dda.tar.gz bcm5719-llvm-8e8c444d3ddf2c6ca045a2487070e0ac30a63dda.zip | |
[PowerPC] Expand ISEL instruction into if-then-else sequence.
Generally, the ISEL is expanded into if-then-else sequence, in some
cases (like when the destination register is the same with the true
or false value register), it may just be expanded into just the if
or else sequence.
llvm-svn: 292154
Diffstat (limited to 'llvm/test/CodeGen/PowerPC/fold-zero.ll')
| -rw-r--r-- | llvm/test/CodeGen/PowerPC/fold-zero.ll | 21 |
1 files changed, 18 insertions, 3 deletions
diff --git a/llvm/test/CodeGen/PowerPC/fold-zero.ll b/llvm/test/CodeGen/PowerPC/fold-zero.ll index 5e620ece0a9..180d8e1b9f5 100644 --- a/llvm/test/CodeGen/PowerPC/fold-zero.ll +++ b/llvm/test/CodeGen/PowerPC/fold-zero.ll @@ -1,5 +1,6 @@ ; RUN: llc -verify-machineinstrs < %s -mtriple=powerpc64-unknown-linux-gnu -mcpu=pwr7 -mattr=-crbits | FileCheck %s -; RUN: llc -verify-machineinstrs < %s -mtriple=powerpc64-unknown-linux-gnu -mcpu=pwr7 | FileCheck -check-prefix=CHECK-CRB %s +; RUN: llc -verify-machineinstrs < %s -mtriple=powerpc64-unknown-linux-gnu -mcpu=pwr7 | FileCheck --check-prefix=CHECK-CRB %s +; RUN: llc -verify-machineinstrs -ppc-gen-isel=false < %s -mtriple=powerpc64-unknown-linux-gnu -mcpu=pwr7 | FileCheck --check-prefix=CHECK-NO-ISEL %s target datalayout = "E-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-f128:128:128-v128:128:128-n32:64" target triple = "powerpc64-unknown-linux-gnu" @@ -7,19 +8,33 @@ define i32 @test1(i1 %a, i32 %c) nounwind { %x = select i1 %a, i32 %c, i32 0 ret i32 %x -; CHECK: @test1 +; CHECK-LABEL: @test1 ; CHECK-NOT: li {{[0-9]+}}, 0 ; CHECK: isel 3, 0, ; CHECK: blr +; CHECK-NO-ISEL-LABEL: @test1 +; CHECK-NO-ISEL: li 3, 0 +; CHECK-NO-ISEL-NEXT: bc 12, 1, [[TRUE:.LBB[0-9]+]] +; CHECK-NO-ISEL-NEXT: blr +; CHECK-NO-ISEL-NEXT: [[TRUE]] +; CHECK-NO-ISEL-NEXT: addi 3, 4, 0 +; CHECK-NO-ISEL-NEXT: blr } define i32 @test2(i1 %a, i32 %c) nounwind { %x = select i1 %a, i32 0, i32 %c ret i32 %x -; CHECK-CRB: @test2 +; CHECK-CRB-LABEL: @test2 ; CHECK-CRB-NOT: li {{[0-9]+}}, 0 ; CHECK-CRB: isel 3, 0, ; CHECK-CRB: blr +; CHECK-NO-ISEL-LABEL: @test2 +; CHECK-NO-ISEL: bc 12, 1, [[TRUE:.LBB[0-9]+]] +; CHECK-NO-ISEL: ori 3, 4, 0 +; CHECK-NO-ISEL-NEXT: blr +; CHECK-NO-ISEL-NEXT: [[TRUE]] +; CHECK-NO-ISEL-NEXT: addi 3, 0, 0 +; CHECK-NO-ISEL-NEXT: blr } |
