diff options
Diffstat (limited to 'test/CodeGen/X86/vec_setcc-2.ll')
-rw-r--r-- | test/CodeGen/X86/vec_setcc-2.ll | 96 |
1 files changed, 96 insertions, 0 deletions
diff --git a/test/CodeGen/X86/vec_setcc-2.ll b/test/CodeGen/X86/vec_setcc-2.ll new file mode 100644 index 0000000..ef916dc --- /dev/null +++ b/test/CodeGen/X86/vec_setcc-2.ll @@ -0,0 +1,96 @@ +; RUN: llc < %s -o - -mcpu=generic -mtriple=x86_64-apple-darwin -mattr=+sse2 | FileCheck %s +; RUN: llc < %s -o - -mcpu=generic -mtriple=x86_64-apple-darwin -mattr=+sse4.2 | FileCheck %s + +; For a setult against a constant, turn it into a setule and lower via psubusw. + +define void @loop_no_const_reload(<2 x i64>* %in, <2 x i64>* %out, i32 %n) { +; CHECK: .short 25 +; CHECK-NEXT: .short 25 +; CHECK-NEXT: .short 25 +; CHECK-NEXT: .short 25 +; CHECK-NEXT: .short 25 +; CHECK-NEXT: .short 25 +; CHECK-NEXT: .short 25 +; CHECK-NEXT: .short 25 +; CHECK-LABEL: loop_no_const_reload: +; CHECK: psubusw + +; Constant is no longer clobbered so no need to reload it in the loop. + +; CHECK-NOT: movdqa {{%xmm[0-9]+}}, {{%xmm[0-9]+}} + +entry: + %cmp9 = icmp eq i32 %n, 0 + br i1 %cmp9, label %for.end, label %for.body + +for.body: ; preds = %for.body, %entry + %indvars.iv = phi i64 [ %indvars.iv.next, %for.body ], [ 0, %entry ] + %arrayidx1 = getelementptr inbounds <2 x i64>* %in, i64 %indvars.iv + %arrayidx1.val = load <2 x i64>* %arrayidx1, align 16 + %0 = bitcast <2 x i64> %arrayidx1.val to <8 x i16> + %cmp.i.i = icmp ult <8 x i16> %0, <i16 26, i16 26, i16 26, i16 26, i16 26, i16 26, i16 26, i16 26> + %sext.i.i = sext <8 x i1> %cmp.i.i to <8 x i16> + %1 = bitcast <8 x i16> %sext.i.i to <2 x i64> + %arrayidx5 = getelementptr inbounds <2 x i64>* %out, i64 %indvars.iv + store <2 x i64> %1, <2 x i64>* %arrayidx5, align 16 + %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1 + %lftr.wideiv = trunc i64 %indvars.iv.next to i32 + %exitcond = icmp eq i32 %lftr.wideiv, %n + br i1 %exitcond, label %for.end, label %for.body + +for.end: ; preds = %for.body, %entry + ret void +} + +; Be careful if decrementing the constant would undeflow. + +define void @loop_const_folding_underflow(<2 x i64>* %in, <2 x i64>* %out, i32 %n) { +; CHECK-NOT: .short 25 +; CHECK-LABEL: loop_const_folding_underflow: +; CHECK-NOT: psubusw +entry: + %cmp9 = icmp eq i32 %n, 0 + br i1 %cmp9, label %for.end, label %for.body + +for.body: ; preds = %for.body, %entry + %indvars.iv = phi i64 [ %indvars.iv.next, %for.body ], [ 0, %entry ] + %arrayidx1 = getelementptr inbounds <2 x i64>* %in, i64 %indvars.iv + %arrayidx1.val = load <2 x i64>* %arrayidx1, align 16 + %0 = bitcast <2 x i64> %arrayidx1.val to <8 x i16> + %cmp.i.i = icmp ult <8 x i16> %0, <i16 0, i16 26, i16 26, i16 26, i16 26, i16 26, i16 26, i16 26> + %sext.i.i = sext <8 x i1> %cmp.i.i to <8 x i16> + %1 = bitcast <8 x i16> %sext.i.i to <2 x i64> + %arrayidx5 = getelementptr inbounds <2 x i64>* %out, i64 %indvars.iv + store <2 x i64> %1, <2 x i64>* %arrayidx5, align 16 + %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1 + %lftr.wideiv = trunc i64 %indvars.iv.next to i32 + %exitcond = icmp eq i32 %lftr.wideiv, %n + br i1 %exitcond, label %for.end, label %for.body + +for.end: ; preds = %for.body, %entry + ret void +} + +; Test for PSUBUSB + +define <16 x i8> @test_ult_byte(<16 x i8> %a) { +; CHECK: .space 16,10 +; CHECK-LABEL: test_ult_byte: +; CHECK: psubus +entry: + %icmp = icmp ult <16 x i8> %a, <i8 11, i8 11, i8 11, i8 11, i8 11, i8 11, i8 11, i8 11, i8 11, i8 11, i8 11, i8 11, i8 11, i8 11, i8 11, i8 11> + %sext = sext <16 x i1> %icmp to <16 x i8> + ret <16 x i8> %sext +} + +; Only do this when we can turn the comparison into a setule. I.e. not for +; register operands. + +define <8 x i16> @test_ult_register(<8 x i16> %a, <8 x i16> %b) { +; CHECK-LABEL: test_ult_register: +; CHECK-NOT: psubus +entry: + %icmp = icmp ult <8 x i16> %a, %b + %sext = sext <8 x i1> %icmp to <8 x i16> + ret <8 x i16> %sext +} |