136 lines
4.1 KiB
LLVM
136 lines
4.1 KiB
LLVM
; RUN: opt < %s -instcombine -S | FileCheck %s
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define i32 @foo(i32) local_unnamed_addr #0 {
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%2 = icmp sgt i32 %0, 2
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%3 = add nsw i32 %0, 20
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%4 = add nsw i32 %0, -20
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select i1 %2, i32 %3, i32 %4, !prof !1
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ret i32 %5
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; CHECK-LABEL: @foo
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; CHECK: select i1 %2, {{.*}} !prof ![[MD1:[0-9]+]]
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}
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define void @min_max_bitcast(<4 x float> %a, <4 x float> %b, <4 x i32>* %ptr1, <4 x i32>* %ptr2) {
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%cmp = fcmp olt <4 x float> %a, %b
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%bc1 = bitcast <4 x float> %a to <4 x i32>
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%bc2 = bitcast <4 x float> %b to <4 x i32>
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%sel1 = select <4 x i1> %cmp, <4 x i32> %bc1, <4 x i32> %bc2, !prof !1
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%sel2 = select <4 x i1> %cmp, <4 x i32> %bc2, <4 x i32> %bc1, !prof !1
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store <4 x i32> %sel1, <4 x i32>* %ptr1
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store <4 x i32> %sel2, <4 x i32>* %ptr2
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ret void
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; CHECK-LABEL: @min_max_bitcast
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; CHECK: select {{.*}} %cmp,{{.*}}!prof ![[MD1]]
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}
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define i32 @foo2(i32, i32) local_unnamed_addr #0 {
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%3 = icmp sgt i32 %0, 2
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%4 = add nsw i32 %0, %1
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%5 = sub nsw i32 %0, %1
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select i1 %3, i32 %4, i32 %5, !prof !1
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ret i32 %6
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; CHECK-LABEL: @foo2
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; CHECK: select i1 %3, {{.*}}, !prof ![[MD1]]
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}
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; condition swapped
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define i64 @test43(i32 %a) nounwind {
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%a_ext = sext i32 %a to i64
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%is_a_nonnegative = icmp sgt i32 %a, -1
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%max = select i1 %is_a_nonnegative, i64 %a_ext, i64 0, !prof !1
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ret i64 %max
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; CHECK-LABEL: @test43
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; CHECK: select {{.*}}, i64 0, i64 %a_ext, !prof ![[MD3:[0-9]+]]
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}
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define <2 x i32> @scalar_select_of_vectors_sext(<2 x i1> %cca, i1 %ccb) {
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%ccax = sext <2 x i1> %cca to <2 x i32>
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%r = select i1 %ccb, <2 x i32> %ccax, <2 x i32> <i32 0, i32 0>, !prof !1
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ret <2 x i32> %r
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; CHECK-LABEL: @scalar_select_of_vectors_sext(
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; CHECK-NEXT: [[FOLD_R:%.*]] = select i1 %ccb, {{.*}}, !prof ![[MD1]]
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; CHECK-NEXT: [[R:%.*]] = sext <2 x i1> [[FOLD_R]] to <2 x i32>
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; CHECK-NEXT: ret <2 x i32> [[R]]
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}
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define i16 @t7(i32 %a) {
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%1 = icmp slt i32 %a, -32768
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%2 = trunc i32 %a to i16
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%3 = select i1 %1, i16 %2, i16 -32768, !prof !1
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ret i16 %3
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}
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; CHECK-LABEL: @t7
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; CHECK-NEXT: icmp
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; CHECK-NEXT: select i1 %1{{.*}}, !prof ![[MD1]]
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; CHECK-NEXT: trunc
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define i32 @abs_nabs_x01(i32 %x) {
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%cmp = icmp sgt i32 %x, -1
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%sub = sub nsw i32 0, %x
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%cond = select i1 %cmp, i32 %sub, i32 %x, !prof !1
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%cmp1 = icmp sgt i32 %cond, -1
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%sub16 = sub nsw i32 0, %cond
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%cond18 = select i1 %cmp1, i32 %cond, i32 %sub16, !prof !2
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ret i32 %cond18
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; CHECK-LABEL: @abs_nabs_x01(
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; CHECK-NEXT: [[CMP:%[a-z0-9]+]] = icmp sgt i32 %x, -1
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; CHECK-NEXT: [[NEG:%[a-z0-9]+]] = sub nsw i32 0, %x
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; CHECK-NEXT: [[SEL:%[a-z0-9]+]] = select i1 [[CMP]], i32 %x, i32 [[NEG]], !prof ![[MD1]]
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}
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; SMAX(SMAX(x, y), x) -> SMAX(x, y)
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define i32 @test30(i32 %x, i32 %y) {
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%cmp = icmp sgt i32 %x, %y
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%cond = select i1 %cmp, i32 %x, i32 %y, !prof !1
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%cmp5 = icmp sgt i32 %cond, %x
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%retval = select i1 %cmp5, i32 %cond, i32 %x, !prof !2
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ret i32 %retval
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; CHECK-LABEL: @test30
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; CHECK: select {{.*}}, !prof ![[MD1]]
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}
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define i32 @test70(i32 %x) {
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entry:
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%cmp = icmp slt i32 %x, 75
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%cond = select i1 %cmp, i32 75, i32 %x, !prof !1
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%cmp3 = icmp slt i32 %cond, 36
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%retval = select i1 %cmp3, i32 36, i32 %cond, !prof !2
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ret i32 %retval
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; CHECK-LABEL: @test70
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; CHECK: select {{.*}}, !prof ![[MD1]]
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}
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; SMIN(SMIN(X, 92), 11) -> SMIN(X, 11)
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define i32 @test72(i32 %x) {
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%cmp = icmp sgt i32 %x, 92
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%cond = select i1 %cmp, i32 92, i32 %x, !prof !1
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%cmp3 = icmp sgt i32 %cond, 11
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%retval = select i1 %cmp3, i32 11, i32 %cond, !prof !2
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ret i32 %retval
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; CHECK-LABEL: @test72
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; CHECK: select {{.*}}, !prof ![[MD2:[0-9]+]]
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}
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; SMAX(SMAX(X, 36), 75) -> SMAX(X, 75)
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define i32 @test74(i32 %x) {
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%cmp = icmp slt i32 %x, 36
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%cond = select i1 %cmp, i32 36, i32 %x, !prof !1
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%cmp3 = icmp slt i32 %cond, 75
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%retval = select i1 %cmp3, i32 75, i32 %cond, !prof !2
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ret i32 %retval
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; CHECK-LABEL: @test74
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; CHECK: select {{.*}}, !prof ![[MD2]]
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}
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!1 = !{!"branch_weights", i32 2, i32 10}
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!2 = !{!"branch_weights", i32 3, i32 10}
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; CHECK-DAG: ![[MD1]] = !{!"branch_weights", i32 2, i32 10}
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; CHECK-DAG: ![[MD2]] = !{!"branch_weights", i32 3, i32 10}
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; CHECK-DAG: ![[MD3]] = !{!"branch_weights", i32 10, i32 2}
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