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llvm-mirror/test/Transforms/InstSimplify/known-never-nan.ll
Sanjay Patel ee7ed4c4fc [InstSimplify] use isKnownNeverNaN to fold more fcmp ord/uno 
Remove duplicate tests from InstCombine that were added with
D50582. I left negative tests there to verify that nothing
in InstCombine tries to go overboard. If isKnownNeverNaN is
improved to handle the FP binops or other cases, we should
have coverage under InstSimplify, so we could remove more
duplicate tests from InstCombine at that time.

llvm-svn: 340279
2018-08-21 14:45:13 +00:00

373 lines
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LLVM
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; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt < %s -S -instsimplify | FileCheck %s
declare double @func()
define i1 @nnan_call() {
; CHECK-LABEL: @nnan_call(
; CHECK-NEXT: [[OP:%.*]] = call nnan double @func()
; CHECK-NEXT: ret i1 true
;
%op = call nnan double @func()
%tmp = fcmp ord double %op, %op
ret i1 %tmp
}
define i1 @nnan_fabs_src(double %arg) {
; CHECK-LABEL: @nnan_fabs_src(
; CHECK-NEXT: ret i1 false
;
%nnan = fadd nnan double %arg, 1.0
%op = call double @llvm.fabs.f64(double %nnan)
%tmp = fcmp uno double %op, %op
ret i1 %tmp
}
define i1 @nnan_canonicalize_src(double %arg) {
; CHECK-LABEL: @nnan_canonicalize_src(
; CHECK-NEXT: ret i1 true
;
%nnan = fadd nnan double %arg, 1.0
%op = call double @llvm.canonicalize.f64(double %nnan)
%tmp = fcmp ord double %op, %op
ret i1 %tmp
}
define i1 @nnan_copysign_src(double %arg0, double %arg1) {
; CHECK-LABEL: @nnan_copysign_src(
; CHECK-NEXT: ret i1 false
;
%nnan = fadd nnan double %arg0, 1.0
%op = call double @llvm.copysign.f64(double %nnan, double %arg1)
%tmp = fcmp uno double %op, %op
ret i1 %tmp
}
define i1 @fabs_sqrt_src(double %arg0, double %arg1) {
; CHECK-LABEL: @fabs_sqrt_src(
; CHECK-NEXT: ret i1 true
;
%nnan = fadd nnan double %arg0, 1.0
%fabs = call double @llvm.fabs.f64(double %nnan)
%op = call double @llvm.sqrt.f64(double %fabs)
%tmp = fcmp ord double %op, %op
ret i1 %tmp
}
define i1 @fabs_sqrt_src_maybe_nan(double %arg0, double %arg1) {
; CHECK-LABEL: @fabs_sqrt_src_maybe_nan(
; CHECK-NEXT: [[FABS:%.*]] = call double @llvm.fabs.f64(double [[ARG0:%.*]])
; CHECK-NEXT: [[OP:%.*]] = call double @llvm.sqrt.f64(double [[FABS]])
; CHECK-NEXT: [[TMP:%.*]] = fcmp uno double [[OP]], [[OP]]
; CHECK-NEXT: ret i1 [[TMP]]
;
%fabs = call double @llvm.fabs.f64(double %arg0)
%op = call double @llvm.sqrt.f64(double %fabs)
%tmp = fcmp uno double %op, %op
ret i1 %tmp
}
define i1 @exp_nnan_src(double %arg) {
; CHECK-LABEL: @exp_nnan_src(
; CHECK-NEXT: ret i1 true
;
%nnan = fadd nnan double %arg, 1.0
%op = call double @llvm.exp.f64(double %nnan)
%tmp = fcmp ord double %op, %op
ret i1 %tmp
}
define i1 @exp2_nnan_src(double %arg) {
; CHECK-LABEL: @exp2_nnan_src(
; CHECK-NEXT: ret i1 false
;
%nnan = fadd nnan double %arg, 1.0
%op = call double @llvm.exp2.f64(double %nnan)
%tmp = fcmp uno double %op, %op
ret i1 %tmp
}
define i1 @floor_nnan_src(double %arg) {
; CHECK-LABEL: @floor_nnan_src(
; CHECK-NEXT: ret i1 true
;
%nnan = fadd nnan double %arg, 1.0
%op = call double @llvm.floor.f64(double %nnan)
%tmp = fcmp ord double %op, %op
ret i1 %tmp
}
define i1 @ceil_nnan_src(double %arg) {
; CHECK-LABEL: @ceil_nnan_src(
; CHECK-NEXT: ret i1 false
;
%nnan = fadd nnan double %arg, 1.0
%op = call double @llvm.ceil.f64(double %nnan)
%tmp = fcmp uno double %op, %op
ret i1 %tmp
}
define i1 @trunc_nnan_src(double %arg) {
; CHECK-LABEL: @trunc_nnan_src(
; CHECK-NEXT: ret i1 true
;
%nnan = fadd nnan double %arg, 1.0
%op = call double @llvm.trunc.f64(double %nnan)
%tmp = fcmp ord double %op, %op
ret i1 %tmp
}
define i1 @rint_nnan_src(double %arg) {
; CHECK-LABEL: @rint_nnan_src(
; CHECK-NEXT: ret i1 false
;
%nnan = fadd nnan double %arg, 1.0
%op = call double @llvm.rint.f64(double %nnan)
%tmp = fcmp uno double %op, %op
ret i1 %tmp
}
define i1 @nearbyint_nnan_src(double %arg) {
; CHECK-LABEL: @nearbyint_nnan_src(
; CHECK-NEXT: ret i1 true
;
%nnan = fadd nnan double %arg, 1.0
%op = call double @llvm.nearbyint.f64(double %nnan)
%tmp = fcmp ord double %op, %op
ret i1 %tmp
}
define i1 @round_nnan_src(double %arg) {
; CHECK-LABEL: @round_nnan_src(
; CHECK-NEXT: ret i1 false
;
%nnan = fadd nnan double %arg, 1.0
%op = call double @llvm.round.f64(double %nnan)
%tmp = fcmp uno double %op, %op
ret i1 %tmp
}
define i1 @known_nan_select(i1 %cond, double %arg0, double %arg1) {
; CHECK-LABEL: @known_nan_select(
; CHECK-NEXT: ret i1 true
;
%lhs = fadd nnan double %arg0, 1.0
%rhs = fadd nnan double %arg1, 2.0
%op = select i1 %cond, double %lhs, double %rhs
%tmp = fcmp ord double %op, %op
ret i1 %tmp
}
define i1 @select_maybe_nan_lhs(i1 %cond, double %lhs, double %arg1) {
; CHECK-LABEL: @select_maybe_nan_lhs(
; CHECK-NEXT: [[RHS:%.*]] = fadd nnan double [[ARG1:%.*]], 1.000000e+00
; CHECK-NEXT: [[OP:%.*]] = select i1 [[COND:%.*]], double [[LHS:%.*]], double [[RHS]]
; CHECK-NEXT: [[TMP:%.*]] = fcmp uno double [[OP]], [[OP]]
; CHECK-NEXT: ret i1 [[TMP]]
;
%rhs = fadd nnan double %arg1, 1.0
%op = select i1 %cond, double %lhs, double %rhs
%tmp = fcmp uno double %op, %op
ret i1 %tmp
}
define i1 @select_maybe_nan_rhs(i1 %cond, double %arg0, double %rhs) {
; CHECK-LABEL: @select_maybe_nan_rhs(
; CHECK-NEXT: [[LHS:%.*]] = fadd nnan double [[ARG0:%.*]], 1.000000e+00
; CHECK-NEXT: [[OP:%.*]] = select i1 [[COND:%.*]], double [[LHS]], double [[RHS:%.*]]
; CHECK-NEXT: [[TMP:%.*]] = fcmp ord double [[OP]], [[OP]]
; CHECK-NEXT: ret i1 [[TMP]]
;
%lhs = fadd nnan double %arg0, 1.0
%op = select i1 %cond, double %lhs, double %rhs
%tmp = fcmp ord double %op, %op
ret i1 %tmp
}
define i1 @nnan_fadd(double %arg0, double %arg1) {
; CHECK-LABEL: @nnan_fadd(
; CHECK-NEXT: [[NNAN_ARG0:%.*]] = fadd nnan double [[ARG0:%.*]], 1.000000e+00
; CHECK-NEXT: [[NNAN_ARG1:%.*]] = fadd nnan double [[ARG0]], 2.000000e+00
; CHECK-NEXT: [[OP:%.*]] = fadd double [[NNAN_ARG0]], [[NNAN_ARG1]]
; CHECK-NEXT: [[TMP:%.*]] = fcmp uno double [[OP]], [[OP]]
; CHECK-NEXT: ret i1 [[TMP]]
;
%nnan.arg0 = fadd nnan double %arg0, 1.0
%nnan.arg1 = fadd nnan double %arg0, 2.0
%op = fadd double %nnan.arg0, %nnan.arg1
%tmp = fcmp uno double %op, %op
ret i1 %tmp
}
define i1 @nnan_fadd_maybe_nan_lhs(double %arg0, double %arg1) {
; CHECK-LABEL: @nnan_fadd_maybe_nan_lhs(
; CHECK-NEXT: [[NNAN_ARG1:%.*]] = fadd nnan double [[ARG1:%.*]], 1.000000e+00
; CHECK-NEXT: [[OP:%.*]] = fadd double [[ARG0:%.*]], [[NNAN_ARG1]]
; CHECK-NEXT: [[TMP:%.*]] = fcmp ord double [[OP]], [[OP]]
; CHECK-NEXT: ret i1 [[TMP]]
;
%nnan.arg1 = fadd nnan double %arg1, 1.0
%op = fadd double %arg0, %nnan.arg1
%tmp = fcmp ord double %op, %op
ret i1 %tmp
}
define i1 @nnan_fadd_maybe_nan_rhs(double %arg0, double %arg1) {
; CHECK-LABEL: @nnan_fadd_maybe_nan_rhs(
; CHECK-NEXT: [[NNAN_ARG0:%.*]] = fadd nnan double [[ARG0:%.*]], 1.000000e+00
; CHECK-NEXT: [[OP:%.*]] = fadd double [[NNAN_ARG0]], [[ARG1:%.*]]
; CHECK-NEXT: [[TMP:%.*]] = fcmp uno double [[OP]], [[OP]]
; CHECK-NEXT: ret i1 [[TMP]]
;
%nnan.arg0 = fadd nnan double %arg0, 1.0
%op = fadd double %nnan.arg0, %arg1
%tmp = fcmp uno double %op, %op
ret i1 %tmp
}
define i1 @nnan_fmul(double %arg0, double %arg1) {
; CHECK-LABEL: @nnan_fmul(
; CHECK-NEXT: [[NNAN_ARG0:%.*]] = fadd nnan double [[ARG0:%.*]], 1.000000e+00
; CHECK-NEXT: [[NNAN_ARG1:%.*]] = fadd nnan double [[ARG0]], 2.000000e+00
; CHECK-NEXT: [[OP:%.*]] = fmul double [[NNAN_ARG0]], [[NNAN_ARG1]]
; CHECK-NEXT: [[TMP:%.*]] = fcmp ord double [[OP]], [[OP]]
; CHECK-NEXT: ret i1 [[TMP]]
;
%nnan.arg0 = fadd nnan double %arg0, 1.0
%nnan.arg1 = fadd nnan double %arg0, 2.0
%op = fmul double %nnan.arg0, %nnan.arg1
%tmp = fcmp ord double %op, %op
ret i1 %tmp
}
define i1 @nnan_fsub(double %arg0, double %arg1) {
; CHECK-LABEL: @nnan_fsub(
; CHECK-NEXT: [[NNAN_ARG0:%.*]] = fadd nnan double [[ARG0:%.*]], 1.000000e+00
; CHECK-NEXT: [[NNAN_ARG1:%.*]] = fadd nnan double [[ARG0]], 2.000000e+00
; CHECK-NEXT: [[OP:%.*]] = fsub double [[NNAN_ARG0]], [[NNAN_ARG1]]
; CHECK-NEXT: [[TMP:%.*]] = fcmp uno double [[OP]], [[OP]]
; CHECK-NEXT: ret i1 [[TMP]]
;
%nnan.arg0 = fadd nnan double %arg0, 1.0
%nnan.arg1 = fadd nnan double %arg0, 2.0
%op = fsub double %nnan.arg0, %nnan.arg1
%tmp = fcmp uno double %op, %op
ret i1 %tmp
}
define i1 @nnan_fneg() {
; CHECK-LABEL: @nnan_fneg(
; CHECK-NEXT: [[NNAN:%.*]] = call nnan double @func()
; CHECK-NEXT: [[OP:%.*]] = fsub double -0.000000e+00, [[NNAN]]
; CHECK-NEXT: [[TMP:%.*]] = fcmp ord double [[OP]], [[OP]]
; CHECK-NEXT: ret i1 [[TMP]]
;
%nnan = call nnan double @func()
%op = fsub double -0.0, %nnan
%tmp = fcmp ord double %op, %op
ret i1 %tmp
}
define i1 @sitofp(i32 %arg0) {
; CHECK-LABEL: @sitofp(
; CHECK-NEXT: ret i1 false
;
%op = sitofp i32 %arg0 to double
%tmp = fcmp uno double %op, %op
ret i1 %tmp
}
define i1 @uitofp(i32 %arg0) {
; CHECK-LABEL: @uitofp(
; CHECK-NEXT: ret i1 true
;
%op = uitofp i32 %arg0 to double
%tmp = fcmp ord double %op, %op
ret i1 %tmp
}
define i1 @fpext(float %arg0) {
; CHECK-LABEL: @fpext(
; CHECK-NEXT: ret i1 false
;
%arg0.nnan = fadd nnan float %arg0, 1.0
%op = fpext float %arg0.nnan to double
%tmp = fcmp uno double %op, %op
ret i1 %tmp
}
define i1 @fpext_maybe_nan(float %arg0) {
; CHECK-LABEL: @fpext_maybe_nan(
; CHECK-NEXT: [[OP:%.*]] = fpext float [[ARG0:%.*]] to double
; CHECK-NEXT: [[TMP:%.*]] = fcmp ord double [[OP]], [[OP]]
; CHECK-NEXT: ret i1 [[TMP]]
;
%op = fpext float %arg0 to double
%tmp = fcmp ord double %op, %op
ret i1 %tmp
}
define i1 @fptrunc(double %arg0) {
; CHECK-LABEL: @fptrunc(
; CHECK-NEXT: ret i1 false
;
%arg0.nnan = fadd nnan double %arg0, 1.0
%op = fptrunc double %arg0.nnan to float
%tmp = fcmp uno float %op, %op
ret i1 %tmp
}
define i1 @fptrunc_maybe_nan(double %arg0) {
; CHECK-LABEL: @fptrunc_maybe_nan(
; CHECK-NEXT: [[OP:%.*]] = fptrunc double [[ARG0:%.*]] to float
; CHECK-NEXT: [[TMP:%.*]] = fcmp ord float [[OP]], [[OP]]
; CHECK-NEXT: ret i1 [[TMP]]
;
%op = fptrunc double %arg0 to float
%tmp = fcmp ord float %op, %op
ret i1 %tmp
}
define i1 @nnan_fdiv(double %arg0, double %arg1) {
; CHECK-LABEL: @nnan_fdiv(
; CHECK-NEXT: [[NNAN_ARG0:%.*]] = fadd nnan double [[ARG0:%.*]], 1.000000e+00
; CHECK-NEXT: [[NNAN_ARG1:%.*]] = fadd nnan double [[ARG0]], 2.000000e+00
; CHECK-NEXT: [[OP:%.*]] = fdiv double [[NNAN_ARG0]], [[NNAN_ARG1]]
; CHECK-NEXT: [[TMP:%.*]] = fcmp uno double [[OP]], [[OP]]
; CHECK-NEXT: ret i1 [[TMP]]
;
%nnan.arg0 = fadd nnan double %arg0, 1.0
%nnan.arg1 = fadd nnan double %arg0, 2.0
%op = fdiv double %nnan.arg0, %nnan.arg1
%tmp = fcmp uno double %op, %op
ret i1 %tmp
}
define i1 @nnan_frem(double %arg0, double %arg1) {
; CHECK-LABEL: @nnan_frem(
; CHECK-NEXT: [[NNAN_ARG0:%.*]] = fadd nnan double [[ARG0:%.*]], 1.000000e+00
; CHECK-NEXT: [[NNAN_ARG1:%.*]] = fadd nnan double [[ARG0]], 2.000000e+00
; CHECK-NEXT: [[OP:%.*]] = frem double [[NNAN_ARG0]], [[NNAN_ARG1]]
; CHECK-NEXT: [[TMP:%.*]] = fcmp ord double [[OP]], [[OP]]
; CHECK-NEXT: ret i1 [[TMP]]
;
%nnan.arg0 = fadd nnan double %arg0, 1.0
%nnan.arg1 = fadd nnan double %arg0, 2.0
%op = frem double %nnan.arg0, %nnan.arg1
%tmp = fcmp ord double %op, %op
ret i1 %tmp
}
declare double @llvm.sqrt.f64(double)
declare double @llvm.fabs.f64(double)
declare double @llvm.canonicalize.f64(double)
declare double @llvm.copysign.f64(double, double)
declare double @llvm.exp.f64(double)
declare double @llvm.exp2.f64(double)
declare double @llvm.floor.f64(double)
declare double @llvm.ceil.f64(double)
declare double @llvm.trunc.f64(double)
declare double @llvm.rint.f64(double)
declare double @llvm.nearbyint.f64(double)
declare double @llvm.round.f64(double)
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