forked from OSchip/llvm-project
[InstCombine] [NFC] Tests for select with binop fold
llvm-svn: 338727
This commit is contained in:
David Bolvansky
parent
300d363dfd
commit
67647bcfbe
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@ -137,6 +137,99 @@ define i32 @select_xor_inv_icmp2(i32 %x, i32 %y, i32 %z) {
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ret i32 %C
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}
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; TODO: Support for FP opcodes
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define float @select_fadd_icmp(float %x, float %y, float %z) {
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; CHECK-LABEL: @select_fadd_icmp(
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; CHECK-NEXT: [[A:%.*]] = fcmp oeq float [[X:%.*]], -0.000000e+00
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; CHECK-NEXT: [[B:%.*]] = fadd float [[X]], [[Z:%.*]]
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; CHECK-NEXT: [[C:%.*]] = select i1 [[A]], float [[B]], float [[Y:%.*]]
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; CHECK-NEXT: ret float [[C]]
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;
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%A = fcmp oeq float %x, -0.0
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%B = fadd float %x, %z
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%C = select i1 %A, float %B, float %y
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ret float %C
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}
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define float @select_fadd_icmp2(float %x, float %y, float %z) {
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; CHECK-LABEL: @select_fadd_icmp2(
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; CHECK-NEXT: [[A:%.*]] = fcmp ueq float [[X:%.*]], -0.000000e+00
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; CHECK-NEXT: [[B:%.*]] = fadd float [[X]], [[Z:%.*]]
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; CHECK-NEXT: [[C:%.*]] = select i1 [[A]], float [[B]], float [[Y:%.*]]
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; CHECK-NEXT: ret float [[C]]
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;
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%A = fcmp ueq float %x, -0.0
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%B = fadd float %x, %z
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%C = select i1 %A, float %B, float %y
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ret float %C
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}
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define float @select_fmul_icmp(float %x, float %y, float %z) {
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; CHECK-LABEL: @select_fmul_icmp(
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; CHECK-NEXT: [[A:%.*]] = fcmp oeq float [[X:%.*]], 1.000000e+00
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; CHECK-NEXT: [[B:%.*]] = fmul float [[X]], [[Z:%.*]]
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; CHECK-NEXT: [[C:%.*]] = select i1 [[A]], float [[B]], float [[Y:%.*]]
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; CHECK-NEXT: ret float [[C]]
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;
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%A = fcmp oeq float %x, 1.0
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%B = fmul float %x, %z
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%C = select i1 %A, float %B, float %y
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ret float %C
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}
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; TODO: Support for non-commutative opcodes
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define i32 @select_sub_icmp(i32 %x, i32 %y, i32 %z) {
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; CHECK-LABEL: @select_sub_icmp(
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; CHECK-NEXT: [[A:%.*]] = icmp eq i32 [[X:%.*]], 0
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; CHECK-NEXT: [[B:%.*]] = sub i32 [[X]], [[Z:%.*]]
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; CHECK-NEXT: [[C:%.*]] = select i1 [[A]], i32 [[B]], i32 [[Y:%.*]]
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; CHECK-NEXT: ret i32 [[C]]
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;
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%A = icmp eq i32 %x, 0
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%B = sub i32 %x, %z
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%C = select i1 %A, i32 %B, i32 %y
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ret i32 %C
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}
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define i32 @select_shl_icmp(i32 %x, i32 %y, i32 %z) {
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; CHECK-LABEL: @select_shl_icmp(
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; CHECK-NEXT: [[A:%.*]] = icmp eq i32 [[X:%.*]], 0
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; CHECK-NEXT: [[B:%.*]] = shl i32 [[X]], [[Z:%.*]]
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; CHECK-NEXT: [[C:%.*]] = select i1 [[A]], i32 [[B]], i32 [[Y:%.*]]
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; CHECK-NEXT: ret i32 [[C]]
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;
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%A = icmp eq i32 %x, 0
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%B = shl i32 %x, %z
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%C = select i1 %A, i32 %B, i32 %y
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ret i32 %C
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}
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define i32 @select_lshr_icmp(i32 %x, i32 %y, i32 %z) {
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; CHECK-LABEL: @select_lshr_icmp(
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; CHECK-NEXT: [[A:%.*]] = icmp eq i32 [[X:%.*]], 0
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; CHECK-NEXT: [[B:%.*]] = lshr i32 [[X]], [[Z:%.*]]
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; CHECK-NEXT: [[C:%.*]] = select i1 [[A]], i32 [[B]], i32 [[Y:%.*]]
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; CHECK-NEXT: ret i32 [[C]]
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;
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%A = icmp eq i32 %x, 0
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%B = lshr i32 %x, %z
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%C = select i1 %A, i32 %B, i32 %y
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ret i32 %C
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}
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define i32 @select_ashr_icmp(i32 %x, i32 %y, i32 %z) {
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; CHECK-LABEL: @select_ashr_icmp(
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; CHECK-NEXT: [[A:%.*]] = icmp eq i32 [[X:%.*]], 0
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; CHECK-NEXT: [[B:%.*]] = ashr i32 [[X]], [[Z:%.*]]
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; CHECK-NEXT: [[C:%.*]] = select i1 [[A]], i32 [[B]], i32 [[Y:%.*]]
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; CHECK-NEXT: ret i32 [[C]]
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;
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%A = icmp eq i32 %x, 0
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%B = ashr i32 %x, %z
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%C = select i1 %A, i32 %B, i32 %y
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ret i32 %C
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}
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; Negative tests
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define i32 @select_xor_icmp_bad_1(i32 %x, i32 %y, i32 %z, i32 %k) {
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; CHECK-LABEL: @select_xor_icmp_bad_1(
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@ -295,97 +388,134 @@ define i32 @select_or_icmp_bad(i32 %x, i32 %y, i32 %z) {
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ret i32 %C
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}
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; TODO: Support for non-commutative opcodes
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define i32 @select_sub_icmp(i32 %x, i32 %y, i32 %z) {
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; CHECK-LABEL: @select_sub_icmp(
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; CHECK-NEXT: [[A:%.*]] = icmp eq i32 [[X:%.*]], 0
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; CHECK-NEXT: [[B:%.*]] = sub i32 [[X]], [[Z:%.*]]
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; CHECK-NEXT: [[C:%.*]] = select i1 [[A]], i32 [[B]], i32 [[Y:%.*]]
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; CHECK-NEXT: ret i32 [[C]]
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;
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%A = icmp eq i32 %x, 0
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%B = sub i32 %x, %z
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%C = select i1 %A, i32 %B, i32 %y
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ret i32 %C
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}
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define i32 @select_shl_icmp(i32 %x, i32 %y, i32 %z) {
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; CHECK-LABEL: @select_shl_icmp(
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; CHECK-NEXT: [[A:%.*]] = icmp eq i32 [[X:%.*]], 0
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; CHECK-NEXT: [[B:%.*]] = shl i32 [[X]], [[Z:%.*]]
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; CHECK-NEXT: [[C:%.*]] = select i1 [[A]], i32 [[B]], i32 [[Y:%.*]]
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; CHECK-NEXT: ret i32 [[C]]
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;
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%A = icmp eq i32 %x, 0
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%B = shl i32 %x, %z
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%C = select i1 %A, i32 %B, i32 %y
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ret i32 %C
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}
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define i32 @select_lshr_icmp(i32 %x, i32 %y, i32 %z) {
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; CHECK-LABEL: @select_lshr_icmp(
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; CHECK-NEXT: [[A:%.*]] = icmp eq i32 [[X:%.*]], 0
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; CHECK-NEXT: [[B:%.*]] = lshr i32 [[X]], [[Z:%.*]]
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; CHECK-NEXT: [[C:%.*]] = select i1 [[A]], i32 [[B]], i32 [[Y:%.*]]
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; CHECK-NEXT: ret i32 [[C]]
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;
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%A = icmp eq i32 %x, 0
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%B = lshr i32 %x, %z
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%C = select i1 %A, i32 %B, i32 %y
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ret i32 %C
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}
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define i32 @select_ashr_icmp(i32 %x, i32 %y, i32 %z) {
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; CHECK-LABEL: @select_ashr_icmp(
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; CHECK-NEXT: [[A:%.*]] = icmp eq i32 [[X:%.*]], 0
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; CHECK-NEXT: [[B:%.*]] = ashr i32 [[X]], [[Z:%.*]]
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; CHECK-NEXT: [[C:%.*]] = select i1 [[A]], i32 [[B]], i32 [[Y:%.*]]
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; CHECK-NEXT: ret i32 [[C]]
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;
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%A = icmp eq i32 %x, 0
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%B = ashr i32 %x, %z
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%C = select i1 %A, i32 %B, i32 %y
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ret i32 %C
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}
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; TODO: Support for FP opcodes
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define float @select_fadd_icmp(float %x, float %y, float %z) {
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; CHECK-LABEL: @select_fadd_icmp(
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; CHECK-NEXT: [[A:%.*]] = fcmp oeq float [[X:%.*]], -0.000000e+00
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define float @select_fadd_icmp_bad(float %x, float %y, float %z) {
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; CHECK-LABEL: @select_fadd_icmp_bad(
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; CHECK-NEXT: [[A:%.*]] = fcmp oeq float [[X:%.*]], -1.000000e+00
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; CHECK-NEXT: [[B:%.*]] = fadd float [[X]], [[Z:%.*]]
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; CHECK-NEXT: [[C:%.*]] = select i1 [[A]], float [[B]], float [[Y:%.*]]
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; CHECK-NEXT: ret float [[C]]
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;
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%A = fcmp oeq float %x, -0.0
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%A = fcmp oeq float %x, -1.0
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%B = fadd float %x, %z
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%C = select i1 %A, float %B, float %y
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ret float %C
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}
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define float @select_fadd_icmp2(float %x, float %y, float %z) {
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; CHECK-LABEL: @select_fadd_icmp2(
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; CHECK-NEXT: [[A:%.*]] = fcmp ueq float [[X:%.*]], -0.000000e+00
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define float @select_fadd_icmp_bad_2(float %x, float %y, float %z) {
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; CHECK-LABEL: @select_fadd_icmp_bad_2(
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; CHECK-NEXT: [[A:%.*]] = fcmp ueq float [[X:%.*]], -1.000000e+00
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; CHECK-NEXT: [[B:%.*]] = fadd float [[X]], [[Z:%.*]]
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; CHECK-NEXT: [[C:%.*]] = select i1 [[A]], float [[B]], float [[Y:%.*]]
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; CHECK-NEXT: ret float [[C]]
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;
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%A = fcmp ueq float %x, -0.0
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%A = fcmp ueq float %x, -1.0
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%B = fadd float %x, %z
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%C = select i1 %A, float %B, float %y
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ret float %C
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}
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define float @select_fmul_icmp(float %x, float %y, float %z) {
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; CHECK-LABEL: @select_fmul_icmp(
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; CHECK-NEXT: [[A:%.*]] = fcmp oeq float [[X:%.*]], 1.000000e+00
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define float @select_fmul_icmp_bad(float %x, float %y, float %z) {
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; CHECK-LABEL: @select_fmul_icmp_bad(
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; CHECK-NEXT: [[A:%.*]] = fcmp oeq float [[X:%.*]], 3.000000e+00
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; CHECK-NEXT: [[B:%.*]] = fmul float [[X]], [[Z:%.*]]
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; CHECK-NEXT: [[C:%.*]] = select i1 [[A]], float [[B]], float [[Y:%.*]]
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; CHECK-NEXT: ret float [[C]]
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;
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%A = fcmp oeq float %x, 1.0
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%A = fcmp oeq float %x, 3.0
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%B = fmul float %x, %z
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%C = select i1 %A, float %B, float %y
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ret float %C
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}
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define float @select_fdiv_icmp_bad(float %x, float %y, float %z) {
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; CHECK-LABEL: @select_fdiv_icmp_bad(
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; CHECK-NEXT: [[A:%.*]] = fcmp oeq float [[X:%.*]], 3.000000e+00
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; CHECK-NEXT: [[B:%.*]] = fdiv float [[X]], [[Z:%.*]]
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; CHECK-NEXT: [[C:%.*]] = select i1 [[A]], float [[B]], float [[Y:%.*]]
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; CHECK-NEXT: ret float [[C]]
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;
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%A = fcmp oeq float %x, 3.0
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%B = fdiv float %x, %z
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%C = select i1 %A, float %B, float %y
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ret float %C
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}
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define float @select_fsub_icmp_bad(float %x, float %y, float %z) {
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; CHECK-LABEL: @select_fsub_icmp_bad(
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; CHECK-NEXT: [[A:%.*]] = fcmp oeq float [[X:%.*]], 1.000000e+00
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; CHECK-NEXT: [[B:%.*]] = fsub float [[X]], [[Z:%.*]]
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; CHECK-NEXT: [[C:%.*]] = select i1 [[A]], float [[B]], float [[Y:%.*]]
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; CHECK-NEXT: ret float [[C]]
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;
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%A = fcmp oeq float %x, 1.0
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%B = fsub float %x, %z
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%C = select i1 %A, float %B, float %y
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ret float %C
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}
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define i32 @select_sub_icmp_bad(i32 %x, i32 %y, i32 %z) {
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; CHECK-LABEL: @select_sub_icmp_bad(
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; CHECK-NEXT: [[A:%.*]] = icmp eq i32 [[X:%.*]], 1
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; CHECK-NEXT: [[B:%.*]] = sub i32 [[X]], [[Z:%.*]]
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; CHECK-NEXT: [[C:%.*]] = select i1 [[A]], i32 [[B]], i32 [[Y:%.*]]
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; CHECK-NEXT: ret i32 [[C]]
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;
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%A = icmp eq i32 %x, 1
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%B = sub i32 %x, %z
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%C = select i1 %A, i32 %B, i32 %y
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ret i32 %C
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}
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define i32 @select_sub_icmp_bad_sub_inv(i32 %x, i32 %y, i32 %z) {
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; CHECK-LABEL: @select_sub_icmp_bad_sub_inv(
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; CHECK-NEXT: [[A:%.*]] = icmp eq i32 [[X:%.*]], 0
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; CHECK-NEXT: [[B:%.*]] = sub i32 [[Z:%.*]], [[X]]
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; CHECK-NEXT: [[C:%.*]] = select i1 [[A]], i32 [[B]], i32 [[Y:%.*]]
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; CHECK-NEXT: ret i32 [[C]]
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;
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%A = icmp eq i32 %x, 0
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%B = sub i32 %z, %x
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%C = select i1 %A, i32 %B, i32 %y
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ret i32 %C
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}
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define i32 @select_shl_icmp_bad(i32 %x, i32 %y, i32 %z) {
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; CHECK-LABEL: @select_shl_icmp_bad(
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; CHECK-NEXT: [[A:%.*]] = icmp eq i32 [[X:%.*]], 1
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; CHECK-NEXT: [[B:%.*]] = shl i32 [[X]], [[Z:%.*]]
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; CHECK-NEXT: [[C:%.*]] = select i1 [[A]], i32 [[B]], i32 [[Y:%.*]]
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; CHECK-NEXT: ret i32 [[C]]
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;
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%A = icmp eq i32 %x, 1
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%B = shl i32 %x, %z
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%C = select i1 %A, i32 %B, i32 %y
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ret i32 %C
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}
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define i32 @select_lshr_icmp_bad(i32 %x, i32 %y, i32 %z) {
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; CHECK-LABEL: @select_lshr_icmp_bad(
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; CHECK-NEXT: [[A:%.*]] = icmp eq i32 [[X:%.*]], 1
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; CHECK-NEXT: [[B:%.*]] = lshr i32 [[X]], [[Z:%.*]]
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; CHECK-NEXT: [[C:%.*]] = select i1 [[A]], i32 [[B]], i32 [[Y:%.*]]
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; CHECK-NEXT: ret i32 [[C]]
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;
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%A = icmp eq i32 %x, 1
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%B = lshr i32 %x, %z
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%C = select i1 %A, i32 %B, i32 %y
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ret i32 %C
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}
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define i32 @select_ashr_icmp_bad(i32 %x, i32 %y, i32 %z) {
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; CHECK-LABEL: @select_ashr_icmp_bad(
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; CHECK-NEXT: [[A:%.*]] = icmp eq i32 [[X:%.*]], 1
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; CHECK-NEXT: [[B:%.*]] = ashr i32 [[X]], [[Z:%.*]]
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; CHECK-NEXT: [[C:%.*]] = select i1 [[A]], i32 [[B]], i32 [[Y:%.*]]
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; CHECK-NEXT: ret i32 [[C]]
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;
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%A = icmp eq i32 %x, 1
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%B = ashr i32 %x, %z
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%C = select i1 %A, i32 %B, i32 %y
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ret i32 %C
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}
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!0 = !{!"branch_weights", i32 2, i32 10}
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