llvm-project/llvm/test/CodeGen/Thumb2/thumb2-smul.ll

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; RUN: llc < %s -march=thumb -mcpu=arm1156t2-s -mattr=+thumb2,+t2xtpk,+t2dsp | FileCheck %s
@x = weak global i16 0 ; <i16*> [#uses=1]
@y = weak global i16 0 ; <i16*> [#uses=0]
define i32 @f1(i32 %y) {
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; CHECK: f1
; CHECK: smulbt r0, r1, r0
%tmp = load i16* @x ; <i16> [#uses=1]
%tmp1 = add i16 %tmp, 2 ; <i16> [#uses=1]
%tmp2 = sext i16 %tmp1 to i32 ; <i32> [#uses=1]
%tmp3 = ashr i32 %y, 16 ; <i32> [#uses=1]
%tmp4 = mul i32 %tmp2, %tmp3 ; <i32> [#uses=1]
ret i32 %tmp4
}
define i32 @f2(i32 %x, i32 %y) {
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; CHECK: f2
; CHECK: smultt r0, r1, r0
%tmp1 = ashr i32 %x, 16 ; <i32> [#uses=1]
%tmp3 = ashr i32 %y, 16 ; <i32> [#uses=1]
%tmp4 = mul i32 %tmp3, %tmp1 ; <i32> [#uses=1]
ret i32 %tmp4
}