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Patch to implement UMLAL/SMLAL instructions for the ARM architecture

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This patch corrects the definition of umlal/smlal instructions and adds support
for matching them to the ARM dag combiner.

Bug 12213

Patch by Yin Ma!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@163136 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Arnold Schwaighofer
2012-09-04 14:37:49 +00:00
parent 3251020738
commit 67514e9066
7 changed files with 339 additions and 17 deletions
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44
test/CodeGen/Thumb2/longMACt.ll Normal file
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@@ -0,0 +1,44 @@
; RUN: llc < %s -march=thumb -mattr=+thumb2 | FileCheck %s
; Check generated signed and unsigned multiply accumulate long.
define i64 @MACLongTest1(i32 %a, i32 %b, i64 %c) {
;CHECK: MACLongTest1:
;CHECK: umlal
%conv = zext i32 %a to i64
%conv1 = zext i32 %b to i64
%mul = mul i64 %conv1, %conv
%add = add i64 %mul, %c
ret i64 %add
}
define i64 @MACLongTest2(i32 %a, i32 %b, i64 %c) {
;CHECK: MACLongTest2:
;CHECK: smlal
%conv = sext i32 %a to i64
%conv1 = sext i32 %b to i64
%mul = mul nsw i64 %conv1, %conv
%add = add nsw i64 %mul, %c
ret i64 %add
}
define i64 @MACLongTest3(i32 %a, i32 %b, i32 %c) {
;CHECK: MACLongTest3:
;CHECK: umlal
%conv = zext i32 %b to i64
%conv1 = zext i32 %a to i64
%mul = mul i64 %conv, %conv1
%conv2 = zext i32 %c to i64
%add = add i64 %mul, %conv2
ret i64 %add
}
define i64 @MACLongTest4(i32 %a, i32 %b, i32 %c) {
;CHECK: MACLongTest4:
;CHECK: smlal
%conv = sext i32 %b to i64
%conv1 = sext i32 %a to i64
%mul = mul nsw i64 %conv, %conv1
%conv2 = sext i32 %c to i64
%add = add nsw i64 %mul, %conv2
ret i64 %add
}