sar_fold.ll
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; RUN: llc < %s -mtriple=i686-unknown-unknown | FileCheck %s
define i32 @shl16sar15(i32 %a) #0 {
; CHECK-LABEL: shl16sar15:
; CHECK: # %bb.0:
; CHECK-NEXT: movswl {{[0-9]+}}(%esp), %eax
%1 = shl i32 %a, 16
%2 = ashr exact i32 %1, 15
ret i32 %2
}
define i32 @shl16sar17(i32 %a) #0 {
; CHECK-LABEL: shl16sar17:
; CHECK: # %bb.0:
; CHECK-NEXT: movswl {{[0-9]+}}(%esp), %eax
%1 = shl i32 %a, 16
%2 = ashr exact i32 %1, 17
ret i32 %2
}
define i32 @shl24sar23(i32 %a) #0 {
; CHECK-LABEL: shl24sar23:
; CHECK: # %bb.0:
; CHECK-NEXT: movsbl {{[0-9]+}}(%esp), %eax
%1 = shl i32 %a, 24
%2 = ashr exact i32 %1, 23
ret i32 %2
}
define i32 @shl24sar25(i32 %a) #0 {
; CHECK-LABEL: shl24sar25:
; CHECK: # %bb.0:
; CHECK-NEXT: movsbl {{[0-9]+}}(%esp), %eax
%1 = shl i32 %a, 24
%2 = ashr exact i32 %1, 25
ret i32 %2
}