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llvm-mirror/test/Transforms/InstCombine/float-shrink-compare.ll
Serge Pavlov e9538ca02f [FPEnv] Intrinsic llvm.roundeven 
This intrinsic implements IEEE-754 operation roundToIntegralTiesToEven,
and performs rounding to the nearest integer value, rounding halfway
cases to even. The intrinsic represents the missed case of IEEE-754
rounding operations and now llvm provides full support of the rounding
operations defined by the standard.

Differential Revision: https://reviews.llvm.org/D75670
2020-05-26 19:24:58 +07:00

529 lines
18 KiB
LLVM
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; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt -S -instcombine < %s | FileCheck %s
target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64-S128"
target triple = "x86_64-apple-macosx10.8.0"
define i1 @test1(float %x, float %y) {
; CHECK-LABEL: @test1(
; CHECK-NEXT: [[CEIL:%.*]] = call float @llvm.ceil.f32(float %x)
; CHECK-NEXT: [[CMP:%.*]] = fcmp oeq float [[CEIL]], %y
; CHECK-NEXT: ret i1 [[CMP]]
;
%x.ext = fpext float %x to double
%ceil = call double @ceil(double %x.ext) nounwind readnone
%ext.y = fpext float %y to double
%cmp = fcmp oeq double %ceil, %ext.y
ret i1 %cmp
}
define i1 @test1_intrin(float %x, float %y) {
; CHECK-LABEL: @test1_intrin(
; CHECK-NEXT: [[CEIL:%.*]] = call float @llvm.ceil.f32(float %x)
; CHECK-NEXT: [[CMP:%.*]] = fcmp oeq float [[CEIL]], %y
; CHECK-NEXT: ret i1 [[CMP]]
;
%x.ext = fpext float %x to double
%ceil = call double @llvm.ceil.f64(double %x.ext) nounwind readnone
%ext.y = fpext float %y to double
%cmp = fcmp oeq double %ceil, %ext.y
ret i1 %cmp
}
define i1 @test2(float %x, float %y) {
; CHECK-LABEL: @test2(
; CHECK-NEXT: [[FABS:%.*]] = call float @llvm.fabs.f32(float %x)
; CHECK-NEXT: [[CMP:%.*]] = fcmp oeq float [[FABS]], %y
; CHECK-NEXT: ret i1 [[CMP]]
;
%x.ext = fpext float %x to double
%fabs = call double @fabs(double %x.ext) nounwind readnone
%y.ext = fpext float %y to double
%cmp = fcmp oeq double %fabs, %y.ext
ret i1 %cmp
}
define i1 @test2_intrin(float %x, float %y) {
; CHECK-LABEL: @test2_intrin(
; CHECK-NEXT: [[FABS:%.*]] = call float @llvm.fabs.f32(float %x)
; CHECK-NEXT: [[CMP:%.*]] = fcmp oeq float [[FABS]], %y
; CHECK-NEXT: ret i1 [[CMP]]
;
%x.ext = fpext float %x to double
%fabs = call double @llvm.fabs.f64(double %x.ext) nounwind readnone
%y.ext = fpext float %y to double
%cmp = fcmp oeq double %fabs, %y.ext
ret i1 %cmp
}
define i1 @fmf_test2(float %x, float %y) {
; CHECK-LABEL: @fmf_test2(
; CHECK-NEXT: [[TMP1:%.*]] = call nnan float @llvm.fabs.f32(float %x)
; CHECK-NEXT: [[TMP2:%.*]] = fcmp oeq float [[TMP1]], %y
; CHECK-NEXT: ret i1 [[TMP2]]
;
%1 = fpext float %x to double
%2 = call nnan double @fabs(double %1) nounwind readnone
%3 = fpext float %y to double
%4 = fcmp oeq double %2, %3
ret i1 %4
}
define i1 @test3(float %x, float %y) {
; CHECK-LABEL: @test3(
; CHECK-NEXT: [[FLOOR:%.*]] = call float @llvm.floor.f32(float %x)
; CHECK-NEXT: [[CMP:%.*]] = fcmp oeq float [[FLOOR]], %y
; CHECK-NEXT: ret i1 [[CMP]]
;
%x.ext = fpext float %x to double
%floor = call double @floor(double %x.ext) nounwind readnone
%y.ext = fpext float %y to double
%cmp = fcmp oeq double %floor, %y.ext
ret i1 %cmp
}
define i1 @test3_intrin(float %x, float %y) {
; CHECK-LABEL: @test3_intrin(
; CHECK-NEXT: [[FLOOR:%.*]] = call float @llvm.floor.f32(float %x)
; CHECK-NEXT: [[CMP:%.*]] = fcmp oeq float [[FLOOR]], %y
; CHECK-NEXT: ret i1 [[CMP]]
;
%x.ext = fpext float %x to double
%floor = call double @llvm.floor.f64(double %x.ext) nounwind readnone
%y.ext = fpext float %y to double
%cmp = fcmp oeq double %floor, %y.ext
ret i1 %cmp
}
define i1 @test4(float %x, float %y) {
; CHECK-LABEL: @test4(
; CHECK-NEXT: [[NEARBYINT:%.*]] = call float @llvm.nearbyint.f32(float %x)
; CHECK-NEXT: [[CMP:%.*]] = fcmp oeq float [[NEARBYINT]], %y
; CHECK-NEXT: ret i1 [[CMP]]
;
%x.ext = fpext float %x to double
%nearbyint = call double @nearbyint(double %x.ext) nounwind
%y.ext = fpext float %y to double
%cmp = fcmp oeq double %nearbyint, %y.ext
ret i1 %cmp
}
define i1 @shrink_nearbyint_intrin(float %x, float %y) {
; CHECK-LABEL: @shrink_nearbyint_intrin(
; CHECK-NEXT: [[NEARBYINT:%.*]] = call float @llvm.nearbyint.f32(float %x)
; CHECK-NEXT: [[CMP:%.*]] = fcmp oeq float [[NEARBYINT]], %y
; CHECK-NEXT: ret i1 [[CMP]]
;
%x.ext = fpext float %x to double
%nearbyint = call double @llvm.nearbyint.f64(double %x.ext) nounwind
%y.ext = fpext float %y to double
%cmp = fcmp oeq double %nearbyint, %y.ext
ret i1 %cmp
}
define i1 @test5(float %x, float %y) {
; CHECK-LABEL: @test5(
; CHECK-NEXT: [[RINT:%.*]] = call float @llvm.rint.f32(float %x)
; CHECK-NEXT: [[CMP:%.*]] = fcmp oeq float [[RINT]], %y
; CHECK-NEXT: ret i1 [[CMP]]
;
%x.ext = fpext float %x to double
%rint = call double @rint(double %x.ext) nounwind
%y.ext = fpext float %y to double
%cmp = fcmp oeq double %rint, %y.ext
ret i1 %cmp
}
define i1 @test6(float %x, float %y) {
; CHECK-LABEL: @test6(
; CHECK-NEXT: [[ROUND:%.*]] = call float @llvm.round.f32(float %x)
; CHECK-NEXT: [[CMP:%.*]] = fcmp oeq float [[ROUND]], %y
; CHECK-NEXT: ret i1 [[CMP]]
;
%x.ext = fpext float %x to double
%round = call double @round(double %x.ext) nounwind readnone
%y.ext = fpext float %y to double
%cmp = fcmp oeq double %round, %y.ext
ret i1 %cmp
}
define i1 @test6_intrin(float %x, float %y) {
; CHECK-LABEL: @test6_intrin(
; CHECK-NEXT: [[ROUND:%.*]] = call float @llvm.round.f32(float %x)
; CHECK-NEXT: [[CMP:%.*]] = fcmp oeq float [[ROUND]], %y
; CHECK-NEXT: ret i1 [[CMP]]
;
%x.ext = fpext float %x to double
%round = call double @llvm.round.f64(double %x.ext) nounwind readnone
%y.ext = fpext float %y to double
%cmp = fcmp oeq double %round, %y.ext
ret i1 %cmp
}
define i1 @test6a(float %x, float %y) {
; CHECK-LABEL: @test6a(
; CHECK-NEXT: [[ROUND:%.*]] = call float @llvm.roundeven.f32(float %x)
; CHECK-NEXT: [[CMP:%.*]] = fcmp oeq float [[ROUND]], %y
; CHECK-NEXT: ret i1 [[CMP]]
;
%x.ext = fpext float %x to double
%round = call double @roundeven(double %x.ext) nounwind readnone
%y.ext = fpext float %y to double
%cmp = fcmp oeq double %round, %y.ext
ret i1 %cmp
}
define i1 @test6a_intrin(float %x, float %y) {
; CHECK-LABEL: @test6a_intrin(
; CHECK-NEXT: [[ROUND:%.*]] = call float @llvm.roundeven.f32(float %x)
; CHECK-NEXT: [[CMP:%.*]] = fcmp oeq float [[ROUND]], %y
; CHECK-NEXT: ret i1 [[CMP]]
;
%x.ext = fpext float %x to double
%round = call double @llvm.roundeven.f64(double %x.ext) nounwind readnone
%y.ext = fpext float %y to double
%cmp = fcmp oeq double %round, %y.ext
ret i1 %cmp
}
define i1 @test7(float %x, float %y) {
; CHECK-LABEL: @test7(
; CHECK-NEXT: [[TRUNC:%.*]] = call float @llvm.trunc.f32(float %x)
; CHECK-NEXT: [[CMP:%.*]] = fcmp oeq float [[TRUNC]], %y
; CHECK-NEXT: ret i1 [[CMP]]
;
%x.ext = fpext float %x to double
%trunc = call double @trunc(double %x.ext) nounwind
%y.ext = fpext float %y to double
%cmp = fcmp oeq double %trunc, %y.ext
ret i1 %cmp
}
define i1 @test7_intrin(float %x, float %y) {
; CHECK-LABEL: @test7_intrin(
; CHECK-NEXT: [[TRUNC:%.*]] = call float @llvm.trunc.f32(float %x)
; CHECK-NEXT: [[CMP:%.*]] = fcmp oeq float [[TRUNC]], %y
; CHECK-NEXT: ret i1 [[CMP]]
;
%x.ext = fpext float %x to double
%trunc = call double @llvm.trunc.f64(double %x.ext) nounwind
%y.ext = fpext float %y to double
%cmp = fcmp oeq double %trunc, %y.ext
ret i1 %cmp
}
define i1 @test8(float %x, float %y) {
; CHECK-LABEL: @test8(
; CHECK-NEXT: [[CEIL:%.*]] = call float @llvm.ceil.f32(float %x)
; CHECK-NEXT: [[CMP:%.*]] = fcmp oeq float [[CEIL]], %y
; CHECK-NEXT: ret i1 [[CMP]]
;
%x.ext = fpext float %x to double
%y.ext = fpext float %y to double
%ceil = call double @ceil(double %x.ext) nounwind readnone
%cmp = fcmp oeq double %y.ext, %ceil
ret i1 %cmp
}
define i1 @test8_intrin(float %x, float %y) {
; CHECK-LABEL: @test8_intrin(
; CHECK-NEXT: [[CEIL:%.*]] = call float @llvm.ceil.f32(float %x)
; CHECK-NEXT: [[CMP:%.*]] = fcmp oeq float [[CEIL]], %y
; CHECK-NEXT: ret i1 [[CMP]]
;
%x.ext = fpext float %x to double
%y.ext = fpext float %y to double
%ceil = call double @llvm.ceil.f64(double %x.ext) nounwind readnone
%cmp = fcmp oeq double %y.ext, %ceil
ret i1 %cmp
}
define i1 @test9(float %x, float %y) {
; CHECK-LABEL: @test9(
; CHECK-NEXT: [[FABS:%.*]] = call float @llvm.fabs.f32(float %x)
; CHECK-NEXT: [[CMP:%.*]] = fcmp oeq float [[FABS]], %y
; CHECK-NEXT: ret i1 [[CMP]]
;
%x.ext = fpext float %x to double
%y.ext = fpext float %y to double
%fabs = call double @fabs(double %x.ext) nounwind readnone
%cmp = fcmp oeq double %y.ext, %fabs
ret i1 %cmp
}
define i1 @test9_intrin(float %x, float %y) {
; CHECK-LABEL: @test9_intrin(
; CHECK-NEXT: [[FABS:%.*]] = call float @llvm.fabs.f32(float %x)
; CHECK-NEXT: [[CMP:%.*]] = fcmp oeq float [[FABS]], %y
; CHECK-NEXT: ret i1 [[CMP]]
;
%x.ext = fpext float %x to double
%y.ext = fpext float %y to double
%fabs = call double @llvm.fabs.f64(double %x.ext) nounwind readnone
%cmp = fcmp oeq double %y.ext, %fabs
ret i1 %cmp
}
define i1 @test10(float %x, float %y) {
; CHECK-LABEL: @test10(
; CHECK-NEXT: [[FLOOR:%.*]] = call float @llvm.floor.f32(float %x)
; CHECK-NEXT: [[CMP:%.*]] = fcmp oeq float [[FLOOR]], %y
; CHECK-NEXT: ret i1 [[CMP]]
;
%x.ext = fpext float %x to double
%y.ext = fpext float %y to double
%floor = call double @floor(double %x.ext) nounwind readnone
%cmp = fcmp oeq double %floor, %y.ext
ret i1 %cmp
}
define i1 @test10_intrin(float %x, float %y) {
; CHECK-LABEL: @test10_intrin(
; CHECK-NEXT: [[FLOOR:%.*]] = call float @llvm.floor.f32(float %x)
; CHECK-NEXT: [[CMP:%.*]] = fcmp oeq float [[FLOOR]], %y
; CHECK-NEXT: ret i1 [[CMP]]
;
%x.ext = fpext float %x to double
%y.ext = fpext float %y to double
%floor = call double @llvm.floor.f64(double %x.ext) nounwind readnone
%cmp = fcmp oeq double %floor, %y.ext
ret i1 %cmp
}
define i1 @test11(float %x, float %y) {
; CHECK-LABEL: @test11(
; CHECK-NEXT: [[NEARBYINT:%.*]] = call float @llvm.nearbyint.f32(float %x)
; CHECK-NEXT: [[CMP:%.*]] = fcmp oeq float [[NEARBYINT]], %y
; CHECK-NEXT: ret i1 [[CMP]]
;
%x.ext = fpext float %x to double
%y.ext = fpext float %y to double
%nearbyint = call double @nearbyint(double %x.ext) nounwind
%cmp = fcmp oeq double %nearbyint, %y.ext
ret i1 %cmp
}
define i1 @test11_intrin(float %x, float %y) {
; CHECK-LABEL: @test11_intrin(
; CHECK-NEXT: [[NEARBYINT:%.*]] = call float @llvm.nearbyint.f32(float %x)
; CHECK-NEXT: [[CMP:%.*]] = fcmp oeq float [[NEARBYINT]], %y
; CHECK-NEXT: ret i1 [[CMP]]
;
%x.ext = fpext float %x to double
%y.ext = fpext float %y to double
%nearbyint = call double @llvm.nearbyint.f64(double %x.ext) nounwind
%cmp = fcmp oeq double %nearbyint, %y.ext
ret i1 %cmp
}
define i1 @test12(float %x, float %y) {
; CHECK-LABEL: @test12(
; CHECK-NEXT: [[RINT:%.*]] = call float @llvm.rint.f32(float %x)
; CHECK-NEXT: [[CMP:%.*]] = fcmp oeq float [[RINT]], %y
; CHECK-NEXT: ret i1 [[CMP]]
;
%x.ext = fpext float %x to double
%y.ext = fpext float %y to double
%rint = call double @rint(double %x.ext) nounwind
%cmp = fcmp oeq double %y.ext, %rint
ret i1 %cmp
}
define i1 @test13(float %x, float %y) {
; CHECK-LABEL: @test13(
; CHECK-NEXT: [[ROUND:%.*]] = call float @llvm.round.f32(float %x)
; CHECK-NEXT: [[CMP:%.*]] = fcmp oeq float [[ROUND]], %y
; CHECK-NEXT: ret i1 [[CMP]]
;
%x.ext = fpext float %x to double
%y.ext = fpext float %y to double
%round = call double @round(double %x.ext) nounwind readnone
%cmp = fcmp oeq double %y.ext, %round
ret i1 %cmp
}
define i1 @test13_intrin(float %x, float %y) {
; CHECK-LABEL: @test13_intrin(
; CHECK-NEXT: [[ROUND:%.*]] = call float @llvm.round.f32(float %x)
; CHECK-NEXT: [[CMP:%.*]] = fcmp oeq float [[ROUND]], %y
; CHECK-NEXT: ret i1 [[CMP]]
;
%x.ext = fpext float %x to double
%y.ext = fpext float %y to double
%round = call double @llvm.round.f64(double %x.ext) nounwind readnone
%cmp = fcmp oeq double %y.ext, %round
ret i1 %cmp
}
define i1 @test13a(float %x, float %y) {
; CHECK-LABEL: @test13a(
; CHECK-NEXT: [[ROUND:%.*]] = call float @llvm.roundeven.f32(float %x)
; CHECK-NEXT: [[CMP:%.*]] = fcmp oeq float [[ROUND]], %y
; CHECK-NEXT: ret i1 [[CMP]]
;
%x.ext = fpext float %x to double
%y.ext = fpext float %y to double
%round = call double @roundeven(double %x.ext) nounwind readnone
%cmp = fcmp oeq double %y.ext, %round
ret i1 %cmp
}
define i1 @test13a_intrin(float %x, float %y) {
; CHECK-LABEL: @test13a_intrin(
; CHECK-NEXT: [[ROUND:%.*]] = call float @llvm.roundeven.f32(float %x)
; CHECK-NEXT: [[CMP:%.*]] = fcmp oeq float [[ROUND]], %y
; CHECK-NEXT: ret i1 [[CMP]]
;
%x.ext = fpext float %x to double
%y.ext = fpext float %y to double
%round = call double @llvm.roundeven.f64(double %x.ext) nounwind readnone
%cmp = fcmp oeq double %y.ext, %round
ret i1 %cmp
}
define i1 @test14(float %x, float %y) {
; CHECK-LABEL: @test14(
; CHECK-NEXT: [[TRUNC:%.*]] = call float @llvm.trunc.f32(float %x)
; CHECK-NEXT: [[CMP:%.*]] = fcmp oeq float [[TRUNC]], %y
; CHECK-NEXT: ret i1 [[CMP]]
;
%x.ext = fpext float %x to double
%y.ext = fpext float %y to double
%trunc = call double @trunc(double %x.ext) nounwind
%cmp = fcmp oeq double %y.ext, %trunc
ret i1 %cmp
}
define i1 @test14_intrin(float %x, float %y) {
; CHECK-LABEL: @test14_intrin(
; CHECK-NEXT: [[TRUNC:%.*]] = call float @llvm.trunc.f32(float %x)
; CHECK-NEXT: [[CMP:%.*]] = fcmp oeq float [[TRUNC]], %y
; CHECK-NEXT: ret i1 [[CMP]]
;
%x.ext = fpext float %x to double
%y.ext = fpext float %y to double
%trunc = call double @llvm.trunc.f64(double %x.ext) nounwind
%cmp = fcmp oeq double %y.ext, %trunc
ret i1 %cmp
}
define i1 @test15(float %x, float %y, float %z) {
; CHECK-LABEL: @test15(
; CHECK-NEXT: [[TMP1:%.*]] = call nsz float @llvm.minnum.f32(float [[X:%.*]], float [[Y:%.*]])
; CHECK-NEXT: [[TMP2:%.*]] = fcmp oeq float [[TMP1]], [[Z:%.*]]
; CHECK-NEXT: ret i1 [[TMP2]]
;
%1 = fpext float %x to double
%2 = fpext float %y to double
%3 = call double @fmin(double %1, double %2) nounwind
%4 = fpext float %z to double
%5 = fcmp oeq double %3, %4
ret i1 %5
}
define i1 @test16(float %x, float %y, float %z) {
; CHECK-LABEL: @test16(
; CHECK-NEXT: [[TMP1:%.*]] = call nsz float @llvm.minnum.f32(float [[X:%.*]], float [[Y:%.*]])
; CHECK-NEXT: [[TMP2:%.*]] = fcmp oeq float [[TMP1]], [[Z:%.*]]
; CHECK-NEXT: ret i1 [[TMP2]]
;
%1 = fpext float %z to double
%2 = fpext float %x to double
%3 = fpext float %y to double
%4 = call double @fmin(double %2, double %3) nounwind
%5 = fcmp oeq double %1, %4
ret i1 %5
}
define i1 @test17(float %x, float %y, float %z) {
; CHECK-LABEL: @test17(
; CHECK-NEXT: [[TMP1:%.*]] = call nsz float @llvm.maxnum.f32(float [[X:%.*]], float [[Y:%.*]])
; CHECK-NEXT: [[TMP2:%.*]] = fcmp oeq float [[TMP1]], [[Z:%.*]]
; CHECK-NEXT: ret i1 [[TMP2]]
;
%1 = fpext float %x to double
%2 = fpext float %y to double
%3 = call double @fmax(double %1, double %2) nounwind
%4 = fpext float %z to double
%5 = fcmp oeq double %3, %4
ret i1 %5
}
define i1 @test18(float %x, float %y, float %z) {
; CHECK-LABEL: @test18(
; CHECK-NEXT: [[TMP1:%.*]] = call nsz float @llvm.maxnum.f32(float [[X:%.*]], float [[Y:%.*]])
; CHECK-NEXT: [[TMP2:%.*]] = fcmp oeq float [[TMP1]], [[Z:%.*]]
; CHECK-NEXT: ret i1 [[TMP2]]
;
%1 = fpext float %z to double
%2 = fpext float %x to double
%3 = fpext float %y to double
%4 = call double @fmax(double %2, double %3) nounwind
%5 = fcmp oeq double %1, %4
ret i1 %5
}
define i1 @test19(float %x, float %y, float %z) {
; CHECK-LABEL: @test19(
; CHECK-NEXT: [[COPYSIGNF:%.*]] = call float @copysignf(float %x, float %y) #0
; CHECK-NEXT: [[TMP1:%.*]] = fcmp oeq float [[COPYSIGNF]], %z
; CHECK-NEXT: ret i1 [[TMP1]]
;
%1 = fpext float %x to double
%2 = fpext float %y to double
%3 = call double @copysign(double %1, double %2) nounwind
%4 = fpext float %z to double
%5 = fcmp oeq double %3, %4
ret i1 %5
}
define i1 @test20(float %x, float %y) {
; CHECK-LABEL: @test20(
; CHECK-NEXT: [[TMP1:%.*]] = call nsz float @llvm.minnum.f32(float [[X:%.*]], float 1.000000e+00)
; CHECK-NEXT: [[TMP2:%.*]] = fcmp oeq float [[TMP1]], [[Y:%.*]]
; CHECK-NEXT: ret i1 [[TMP2]]
;
%1 = fpext float %y to double
%2 = fpext float %x to double
%3 = call double @fmin(double 1.000000e+00, double %2) nounwind
%4 = fcmp oeq double %1, %3
ret i1 %4
}
; should not be changed to fminf as the constant would lose precision
define i1 @test21(float %x, float %y) {
; CHECK-LABEL: @test21(
; CHECK-NEXT: [[TMP1:%.*]] = fpext float [[Y:%.*]] to double
; CHECK-NEXT: [[TMP2:%.*]] = fpext float [[X:%.*]] to double
; CHECK-NEXT: [[TMP3:%.*]] = call nsz double @llvm.minnum.f64(double [[TMP2]], double 1.300000e+00)
; CHECK-NEXT: [[TMP4:%.*]] = fcmp oeq double [[TMP3]], [[TMP1]]
; CHECK-NEXT: ret i1 [[TMP4]]
;
%1 = fpext float %y to double
%2 = fpext float %x to double
%3 = call double @fmin(double 1.300000e+00, double %2) nounwind
%4 = fcmp oeq double %1, %3
ret i1 %4
}
declare double @fabs(double) nounwind readnone
declare double @ceil(double) nounwind readnone
declare double @copysign(double, double) nounwind readnone
declare double @floor(double) nounwind readnone
declare double @nearbyint(double) nounwind readnone
declare double @rint(double) nounwind readnone
declare double @round(double) nounwind readnone
declare double @roundeven(double) nounwind readnone
declare double @trunc(double) nounwind readnone
declare double @fmin(double, double) nounwind readnone
declare double @fmax(double, double) nounwind readnone
declare double @llvm.fabs.f64(double) nounwind readnone
declare double @llvm.ceil.f64(double) nounwind readnone
declare double @llvm.floor.f64(double) nounwind readnone
declare double @llvm.nearbyint.f64(double) nounwind readnone
declare double @llvm.round.f64(double) nounwind readnone
declare double @llvm.roundeven.f64(double) nounwind readnone
declare double @llvm.trunc.f64(double) nounwind readnone
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