Additional fixes for bug 15155.

This handles the cases where the 6-bit splat element is odd, converting
to a three-instruction sequence to add or subtract two splats.  With this
fix, the XFAIL in test/CodeGen/PowerPC/vec_constants.ll is removed.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@175663 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 85 insertions, 13 deletions

diff --git a/test/CodeGen/PowerPC/vaddsplat.ll b/test/CodeGen/PowerPC/vaddsplat.ll
index b4c16c1bf9..e65148aff0 100644
--- a/test/CodeGen/PowerPC/vaddsplat.ll
+++ b/test/CodeGen/PowerPC/vaddsplat.ll
@@ -1,6 +1,6 @@
 ; RUN: llc -O0 -mcpu=pwr7 <%s | FileCheck %s
 
-; Test optimization of build_vector into vadd/vsplt for 6-bit immediates.
+; Test optimizations of build_vector for 6-bit immediates.
 
 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"
@@ -9,69 +9,141 @@ target triple = "powerpc64-unknown-linux-gnu"
 %v8i16 = type <8 x i16>
 %v16i8 = type <16 x i8>
 
-define void @test_v4i32_pos(%v4i32* %P, %v4i32* %S) {
+define void @test_v4i32_pos_even(%v4i32* %P, %v4i32* %S) {
        %p = load %v4i32* %P
        %r = add %v4i32 %p, < i32 18, i32 18, i32 18, i32 18 >
        store %v4i32 %r, %v4i32* %S
        ret void
 }
 
-; CHECK: test_v4i32_pos:
+; CHECK: test_v4i32_pos_even:
 ; CHECK: vspltisw [[REG1:[0-9]+]], 9
 ; CHECK: vadduwm {{[0-9]+}}, [[REG1]], [[REG1]]
 
-define void @test_v4i32_neg(%v4i32* %P, %v4i32* %S) {
+define void @test_v4i32_neg_even(%v4i32* %P, %v4i32* %S) {
        %p = load %v4i32* %P
        %r = add %v4i32 %p, < i32 -28, i32 -28, i32 -28, i32 -28 >
        store %v4i32 %r, %v4i32* %S
        ret void
 }
 
-; CHECK: test_v4i32_neg:
+; CHECK: test_v4i32_neg_even:
 ; CHECK: vspltisw [[REG1:[0-9]+]], -14
 ; CHECK: vadduwm {{[0-9]+}}, [[REG1]], [[REG1]]
 
-define void @test_v8i16_pos(%v8i16* %P, %v8i16* %S) {
+define void @test_v8i16_pos_even(%v8i16* %P, %v8i16* %S) {
        %p = load %v8i16* %P
        %r = add %v8i16 %p, < i16 30, i16 30, i16 30, i16 30, i16 30, i16 30, i16 30, i16 30 >
        store %v8i16 %r, %v8i16* %S
        ret void
 }
 
-; CHECK: test_v8i16_pos:
+; CHECK: test_v8i16_pos_even:
 ; CHECK: vspltish [[REG1:[0-9]+]], 15
 ; CHECK: vadduhm {{[0-9]+}}, [[REG1]], [[REG1]]
 
-define void @test_v8i16_neg(%v8i16* %P, %v8i16* %S) {
+define void @test_v8i16_neg_even(%v8i16* %P, %v8i16* %S) {
        %p = load %v8i16* %P
        %r = add %v8i16 %p, < i16 -32, i16 -32, i16 -32, i16 -32, i16 -32, i16 -32, i16 -32, i16 -32 >
        store %v8i16 %r, %v8i16* %S
        ret void
 }
 
-; CHECK: test_v8i16_neg:
+; CHECK: test_v8i16_neg_even:
 ; CHECK: vspltish [[REG1:[0-9]+]], -16
 ; CHECK: vadduhm {{[0-9]+}}, [[REG1]], [[REG1]]
 
-define void @test_v16i8_pos(%v16i8* %P, %v16i8* %S) {
+define void @test_v16i8_pos_even(%v16i8* %P, %v16i8* %S) {
        %p = load %v16i8* %P
        %r = add %v16i8 %p, < i8 16, i8 16, i8 16, i8 16, i8 16, i8 16, i8 16, i8 16, i8 16, i8 16, i8 16, i8 16, i8 16, i8 16, i8 16, i8 16 >
        store %v16i8 %r, %v16i8* %S
        ret void
 }
 
-; CHECK: test_v16i8_pos:
+; CHECK: test_v16i8_pos_even:
 ; CHECK: vspltisb [[REG1:[0-9]+]], 8
 ; CHECK: vaddubm {{[0-9]+}}, [[REG1]], [[REG1]]
 
-define void @test_v16i8_neg(%v16i8* %P, %v16i8* %S) {
+define void @test_v16i8_neg_even(%v16i8* %P, %v16i8* %S) {
        %p = load %v16i8* %P
        %r = add %v16i8 %p, < i8 -18, i8 -18, i8 -18, i8 -18, i8 -18, i8 -18, i8 -18, i8 -18, i8 -18, i8 -18, i8 -18, i8 -18, i8 -18, i8 -18, i8 -18, i8 -18 >
        store %v16i8 %r, %v16i8* %S
        ret void
 }
 
-; CHECK: test_v16i8_neg:
+; CHECK: test_v16i8_neg_even:
 ; CHECK: vspltisb [[REG1:[0-9]+]], -9
 ; CHECK: vaddubm {{[0-9]+}}, [[REG1]], [[REG1]]
 
+define void @test_v4i32_pos_odd(%v4i32* %P, %v4i32* %S) {
+       %p = load %v4i32* %P
+       %r = add %v4i32 %p, < i32 27, i32 27, i32 27, i32 27 >
+       store %v4i32 %r, %v4i32* %S
+       ret void
+}
+
+; CHECK: test_v4i32_pos_odd:
+; CHECK: vspltisw [[REG2:[0-9]+]], -16
+; CHECK: vspltisw [[REG1:[0-9]+]], 11
+; CHECK: vsubuwm {{[0-9]+}}, [[REG1]], [[REG2]]
+
+define void @test_v4i32_neg_odd(%v4i32* %P, %v4i32* %S) {
+       %p = load %v4i32* %P
+       %r = add %v4i32 %p, < i32 -27, i32 -27, i32 -27, i32 -27 >
+       store %v4i32 %r, %v4i32* %S
+       ret void
+}
+
+; CHECK: test_v4i32_neg_odd:
+; CHECK: vspltisw [[REG2:[0-9]+]], -16
+; CHECK: vspltisw [[REG1:[0-9]+]], -11
+; CHECK: vadduwm {{[0-9]+}}, [[REG1]], [[REG2]]
+
+define void @test_v8i16_pos_odd(%v8i16* %P, %v8i16* %S) {
+       %p = load %v8i16* %P
+       %r = add %v8i16 %p, < i16 31, i16 31, i16 31, i16 31, i16 31, i16 31, i16 31, i16 31 >
+       store %v8i16 %r, %v8i16* %S
+       ret void
+}
+
+; CHECK: test_v8i16_pos_odd:
+; CHECK: vspltish [[REG2:[0-9]+]], -16
+; CHECK: vspltish [[REG1:[0-9]+]], 15
+; CHECK: vsubuhm {{[0-9]+}}, [[REG1]], [[REG2]]
+
+define void @test_v8i16_neg_odd(%v8i16* %P, %v8i16* %S) {
+       %p = load %v8i16* %P
+       %r = add %v8i16 %p, < i16 -31, i16 -31, i16 -31, i16 -31, i16 -31, i16 -31, i16 -31, i16 -31 >
+       store %v8i16 %r, %v8i16* %S
+       ret void
+}
+
+; CHECK: test_v8i16_neg_odd:
+; CHECK: vspltish [[REG2:[0-9]+]], -16
+; CHECK: vspltish [[REG1:[0-9]+]], -15
+; CHECK: vadduhm {{[0-9]+}}, [[REG1]], [[REG2]]
+
+define void @test_v16i8_pos_odd(%v16i8* %P, %v16i8* %S) {
+       %p = load %v16i8* %P
+       %r = add %v16i8 %p, < i8 17, i8 17, i8 17, i8 17, i8 17, i8 17, i8 17, i8 17, i8 17, i8 17, i8 17, i8 17, i8 17, i8 17, i8 17, i8 17 >
+       store %v16i8 %r, %v16i8* %S
+       ret void
+}
+
+; CHECK: test_v16i8_pos_odd:
+; CHECK: vspltisb [[REG2:[0-9]+]], -16
+; CHECK: vspltisb [[REG1:[0-9]+]], 1
+; CHECK: vsububm {{[0-9]+}}, [[REG1]], [[REG2]]
+
+define void @test_v16i8_neg_odd(%v16i8* %P, %v16i8* %S) {
+       %p = load %v16i8* %P
+       %r = add %v16i8 %p, < i8 -17, i8 -17, i8 -17, i8 -17, i8 -17, i8 -17, i8 -17, i8 -17, i8 -17, i8 -17, i8 -17, i8 -17, i8 -17, i8 -17, i8 -17, i8 -17 >
+       store %v16i8 %r, %v16i8* %S
+       ret void
+}
+
+; CHECK: test_v16i8_neg_odd:
+; CHECK: vspltisb [[REG2:[0-9]+]], -16
+; CHECK: vspltisb [[REG1:[0-9]+]], -1
+; CHECK: vaddubm {{[0-9]+}}, [[REG1]], [[REG2]]
+