mulhi.ll
1.47 KB
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; RUN: llc -mtriple=arm-eabi -mattr=+v6 %s -o - | FileCheck %s -check-prefix=V6
; RUN: llc -mtriple=arm-eabi %s -o - | FileCheck %s -check-prefix=V4
; RUN: llc -mtriple=thumb-eabi -mcpu=cortex-m3 %s -o - | FileCheck %s -check-prefix=M3
define i32 @smulhi(i32 %x, i32 %y) nounwind {
; V6-LABEL: smulhi:
; V6: smmul
; V4-LABEL: smulhi:
; V4: smull
; M3-LABEL: smulhi:
; M3: smull
%tmp = sext i32 %x to i64 ; <i64> [#uses=1]
%tmp1 = sext i32 %y to i64 ; <i64> [#uses=1]
%tmp2 = mul i64 %tmp1, %tmp ; <i64> [#uses=1]
%tmp3 = lshr i64 %tmp2, 32 ; <i64> [#uses=1]
%tmp3.upgrd.1 = trunc i64 %tmp3 to i32 ; <i32> [#uses=1]
ret i32 %tmp3.upgrd.1
}
define i32 @umulhi(i32 %x, i32 %y) nounwind {
; V6-LABEL: umulhi:
; V6: umull
; V4-LABEL: umulhi:
; V4: umull
; M3-LABEL: umulhi:
; M3: umull
%tmp = zext i32 %x to i64 ; <i64> [#uses=1]
%tmp1 = zext i32 %y to i64 ; <i64> [#uses=1]
%tmp2 = mul i64 %tmp1, %tmp ; <i64> [#uses=1]
%tmp3 = lshr i64 %tmp2, 32 ; <i64> [#uses=1]
%tmp3.upgrd.2 = trunc i64 %tmp3 to i32 ; <i32> [#uses=1]
ret i32 %tmp3.upgrd.2
}
; rdar://r10152911
define i32 @t3(i32 %a) nounwind {
; V6-LABEL: t3:
; V6: smmla
; V4-LABEL: t3:
; V4: smull
; M3-LABEL: t3:
; M3-NOT: smmla
; M3: smull
entry:
%tmp1 = mul nsw i32 %a, 3
%tmp2 = sdiv i32 %tmp1, 23
ret i32 %tmp2
}