It's not necessary to do rounding for alloca operations when the requested

alignment is equal to the stack alignment.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40004 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 26 insertions, 0 deletions

diff --git a/test/CodeGen/PowerPC/rlwimi3.ll b/test/CodeGen/PowerPC/rlwimi3.ll
new file mode 100644
index 0000000..b313ef9
--- /dev/null
+++ b/test/CodeGen/PowerPC/rlwimi3.ll
@@ -0,0 +1,26 @@
+; RUN: llvm-upgrade < %s | llvm-as | llc -march=ppc32 -stats |& \
+; RUN:   grep {Number of machine instrs printed} | grep 12
+
+ushort %Trans16Bit(uint %srcA, uint %srcB, uint %alpha) {
+        %tmp1 = shl uint %srcA, ubyte 15                ; <uint> [#uses=1]
+        %tmp2 = and uint %tmp1, 32505856                ; <uint> [#uses=1]
+        %tmp4 = and uint %srcA, 31775           ; <uint> [#uses=1]
+        %tmp5 = or uint %tmp2, %tmp4            ; <uint> [#uses=1]
+        %tmp7 = shl uint %srcB, ubyte 15                ; <uint> [#uses=1]
+        %tmp8 = and uint %tmp7, 32505856                ; <uint> [#uses=1]
+        %tmp10 = and uint %srcB, 31775          ; <uint> [#uses=1]
+        %tmp11 = or uint %tmp8, %tmp10          ; <uint> [#uses=1]
+        %tmp14 = mul uint %tmp5, %alpha         ; <uint> [#uses=1]
+        %tmp16 = sub uint 32, %alpha            ; <uint> [#uses=1]
+        %tmp18 = mul uint %tmp11, %tmp16                ; <uint> [#uses=1]
+        %tmp19 = add uint %tmp18, %tmp14                ; <uint> [#uses=2]
+        %tmp21 = shr uint %tmp19, ubyte 5               ; <uint> [#uses=1]
+        %tmp21 = cast uint %tmp21 to ushort             ; <ushort> [#uses=1]
+        %tmp = and ushort %tmp21, 31775         ; <ushort> [#uses=1]
+        %tmp23 = shr uint %tmp19, ubyte 20              ; <uint> [#uses=1]
+        %tmp23 = cast uint %tmp23 to ushort             ; <ushort> [#uses=1]
+        %tmp24 = and ushort %tmp23, 992         ; <ushort> [#uses=1]
+        %tmp25 = or ushort %tmp, %tmp24         ; <ushort> [#uses=1]
+        ret ushort %tmp25
+}
+