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; RUN: llc -march=x86 < %s | FileCheck %s
@array = weak global [4 x i32] zeroinitializer
define i32 @test_lshr_and(i32 %x) {
; CHECK-LABEL: test_lshr_and:
; CHECK-NOT: shrl
; CHECK: andl $12,
; CHECK: movl {{.*}}array{{.*}},
; CHECK: ret
entry:
%tmp2 = lshr i32 %x, 2
%tmp3 = and i32 %tmp2, 3
%tmp4 = getelementptr [4 x i32], [4 x i32]* @array, i32 0, i32 %tmp3
%tmp5 = load i32, i32* %tmp4, align 4
ret i32 %tmp5
}
define i32* @test_exact1(i32 %a, i32 %b, i32* %x) {
; CHECK-LABEL: test_exact1:
; CHECK: sarl %
%sub = sub i32 %b, %a
%shr = ashr exact i32 %sub, 3
%gep = getelementptr inbounds i32, i32* %x, i32 %shr
ret i32* %gep
}
define i32* @test_exact2(i32 %a, i32 %b, i32* %x) {
; CHECK-LABEL: test_exact2:
; CHECK: sarl %
%sub = sub i32 %b, %a
%shr = ashr exact i32 %sub, 3
%gep = getelementptr inbounds i32, i32* %x, i32 %shr
ret i32* %gep
}
define i32* @test_exact3(i32 %a, i32 %b, i32* %x) {
; CHECK-LABEL: test_exact3:
; CHECK-NOT: sarl
%sub = sub i32 %b, %a
%shr = ashr exact i32 %sub, 2
%gep = getelementptr inbounds i32, i32* %x, i32 %shr
ret i32* %gep
}
define i32* @test_exact4(i32 %a, i32 %b, i32* %x) {
; CHECK-LABEL: test_exact4:
; CHECK: shrl %
%sub = sub i32 %b, %a
%shr = lshr exact i32 %sub, 3
%gep = getelementptr inbounds i32, i32* %x, i32 %shr
ret i32* %gep
}
define i32* @test_exact5(i32 %a, i32 %b, i32* %x) {
; CHECK-LABEL: test_exact5:
; CHECK: shrl %
%sub = sub i32 %b, %a
%shr = lshr exact i32 %sub, 3
%gep = getelementptr inbounds i32, i32* %x, i32 %shr
ret i32* %gep
}
define i32* @test_exact6(i32 %a, i32 %b, i32* %x) {
; CHECK-LABEL: test_exact6:
; CHECK-NOT: shrl
%sub = sub i32 %b, %a
%shr = lshr exact i32 %sub, 2
%gep = getelementptr inbounds i32, i32* %x, i32 %shr
ret i32* %gep
}
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