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| author | Craig Topper <craig.topper@intel.com> | 2019-09-17 04:41:01 +0000 |
|---|---|---|
| committer | Craig Topper <craig.topper@intel.com> | 2019-09-17 04:41:01 +0000 |
| commit | d51576a3f06b97ead304f8df54e08dfdffa607fa (patch) | |
| tree | 03ad7d8d5d9672fc3a07deb60b7589721f0d59de /llvm/test/CodeGen/X86/avx512-broadcast-unfold.ll | |
| parent | 359918dadf4d3c17df33208e403132c371cb2473 (diff) | |
| download | bcm5719-llvm-d51576a3f06b97ead304f8df54e08dfdffa607fa.tar.gz bcm5719-llvm-d51576a3f06b97ead304f8df54e08dfdffa607fa.zip | |
[X86] Add test case for missed opportunity to commute a VCMP instruction after unfolding one load in order to fold another load.
llvm-svn: 372066
Diffstat (limited to 'llvm/test/CodeGen/X86/avx512-broadcast-unfold.ll')
| -rw-r--r-- | llvm/test/CodeGen/X86/avx512-broadcast-unfold.ll | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/llvm/test/CodeGen/X86/avx512-broadcast-unfold.ll b/llvm/test/CodeGen/X86/avx512-broadcast-unfold.ll index fb097dda114..e337fa3ec99 100644 --- a/llvm/test/CodeGen/X86/avx512-broadcast-unfold.ll +++ b/llvm/test/CodeGen/X86/avx512-broadcast-unfold.ll @@ -4448,3 +4448,40 @@ bb1: ; preds = %bb1, %bb bb10: ; preds = %bb1 ret void } + +define void @bcast_unfold_cmp_v8f32_refold(float* nocapture %0) { +; CHECK-LABEL: bcast_unfold_cmp_v8f32_refold: +; CHECK: # %bb.0: +; CHECK-NEXT: movq $-4096, %rax # imm = 0xF000 +; CHECK-NEXT: vbroadcastss {{.*#+}} ymm0 = [2.0E+0,2.0E+0,2.0E+0,2.0E+0,2.0E+0,2.0E+0,2.0E+0,2.0E+0] +; CHECK-NEXT: vbroadcastss {{.*#+}} ymm1 = [3.0E+0,3.0E+0,3.0E+0,3.0E+0,3.0E+0,3.0E+0,3.0E+0,3.0E+0] +; CHECK-NEXT: .p2align 4, 0x90 +; CHECK-NEXT: .LBB126_1: # =>This Inner Loop Header: Depth=1 +; CHECK-NEXT: vmovups 4096(%rdi,%rax), %ymm2 +; CHECK-NEXT: vcmpltps %ymm0, %ymm2, %k1 +; CHECK-NEXT: vmovaps %ymm1, %ymm2 +; CHECK-NEXT: vbroadcastss {{.*}}(%rip), %ymm2 {%k1} +; CHECK-NEXT: vmovups %ymm2, 4096(%rdi,%rax) +; CHECK-NEXT: addq $32, %rax +; CHECK-NEXT: jne .LBB126_1 +; CHECK-NEXT: # %bb.2: +; CHECK-NEXT: vzeroupper +; CHECK-NEXT: retq + br label %2 + +2: ; preds = %2, %1 + %3 = phi i64 [ 0, %1 ], [ %10, %2 ] + %4 = getelementptr inbounds float, float* %0, i64 %3 + %5 = bitcast float* %4 to <8 x float>* + %6 = load <8 x float>, <8 x float>* %5, align 4 + %7 = fcmp olt <8 x float> %6, <float 2.000000e+00, float 2.000000e+00, float 2.000000e+00, float 2.000000e+00, float 2.000000e+00, float 2.000000e+00, float 2.000000e+00, float 2.000000e+00> + %8 = select <8 x i1> %7, <8 x float> <float 4.000000e+00, float 4.000000e+00, float 4.000000e+00, float 4.000000e+00, float 4.000000e+00, float 4.000000e+00, float 4.000000e+00, float 4.000000e+00>, <8 x float> <float 3.000000e+00, float 3.000000e+00, float 3.000000e+00, float 3.000000e+00, float 3.000000e+00, float 3.000000e+00, float 3.000000e+00, float 3.000000e+00> + %9 = bitcast float* %4 to <8 x float>* + store <8 x float> %8, <8 x float>* %9, align 4 + %10 = add i64 %3, 8 + %11 = icmp eq i64 %10, 1024 + br i1 %11, label %12, label %2 + +12: ; preds = %2 + ret void +} |
