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https://github.com/RPCS3/llvm-mirror.git
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3a2064d3a0
The IEEE-754 Standard makes it clear that fneg(x) and fsub(-0.0, x) are two different operations. The former is a bitwise operation, while the latter is an arithmetic operation. This patch creates a dedicated FNeg IR Instruction to model that behavior. Differential Revision: https://reviews.llvm.org/D53877 llvm-svn: 346774
192 lines
6.3 KiB
LLVM
192 lines
6.3 KiB
LLVM
; RUN: llvm-as < %s | llvm-dis | FileCheck -strict-whitespace %s
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; RUN: opt -S < %s | FileCheck -strict-whitespace %s
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; RUN: verify-uselistorder %s
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@addr = external global i64
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@select = external global i1
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@vec = external global <3 x float>
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@arr = external global [3 x float]
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declare float @foo(float)
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define float @none(float %x, float %y) {
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entry:
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; CHECK: %vec = load <3 x float>, <3 x float>* @vec
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%vec = load <3 x float>, <3 x float>* @vec
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; CHECK: %select = load i1, i1* @select
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%select = load i1, i1* @select
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; CHECK: %arr = load [3 x float], [3 x float]* @arr
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%arr = load [3 x float], [3 x float]* @arr
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; CHECK: %a = fadd float %x, %y
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%a = fadd float %x, %y
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; CHECK: %a_vec = fadd <3 x float> %vec, %vec
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%a_vec = fadd <3 x float> %vec, %vec
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; CHECK: %b = fsub float %x, %y
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%b = fsub float %x, %y
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; CHECK: %b_vec = fsub <3 x float> %vec, %vec
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%b_vec = fsub <3 x float> %vec, %vec
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; CHECK: %c = fmul float %x, %y
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%c = fmul float %x, %y
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; CHECK: %c_vec = fmul <3 x float> %vec, %vec
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%c_vec = fmul <3 x float> %vec, %vec
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; CHECK: %d = fdiv float %x, %y
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%d = fdiv float %x, %y
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; CHECK: %d_vec = fdiv <3 x float> %vec, %vec
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%d_vec = fdiv <3 x float> %vec, %vec
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; CHECK: %e = frem float %x, %y
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%e = frem float %x, %y
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; CHECK: %e_vec = frem <3 x float> %vec, %vec
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%e_vec = frem <3 x float> %vec, %vec
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; CHECK: %f = fneg float %x
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%f = fneg float %x
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; CHECK: %f_vec = fneg <3 x float> %vec
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%f_vec = fneg <3 x float> %vec
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; CHECK: ret float %f
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ret float %f
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}
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; CHECK: no_nan
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define float @no_nan(float %x, float %y) {
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entry:
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; CHECK: %vec = load <3 x float>, <3 x float>* @vec
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%vec = load <3 x float>, <3 x float>* @vec
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; CHECK: %select = load i1, i1* @select
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%select = load i1, i1* @select
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; CHECK: %arr = load [3 x float], [3 x float]* @arr
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%arr = load [3 x float], [3 x float]* @arr
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; CHECK: %a = fadd nnan float %x, %y
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%a = fadd nnan float %x, %y
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; CHECK: %a_vec = fadd nnan <3 x float> %vec, %vec
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%a_vec = fadd nnan <3 x float> %vec, %vec
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; CHECK: %b = fsub nnan float %x, %y
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%b = fsub nnan float %x, %y
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; CHECK: %b_vec = fsub nnan <3 x float> %vec, %vec
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%b_vec = fsub nnan <3 x float> %vec, %vec
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; CHECK: %c = fmul nnan float %x, %y
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%c = fmul nnan float %x, %y
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; CHECK: %c_vec = fmul nnan <3 x float> %vec, %vec
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%c_vec = fmul nnan <3 x float> %vec, %vec
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; CHECK: %d = fdiv nnan float %x, %y
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%d = fdiv nnan float %x, %y
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; CHECK: %d_vec = fdiv nnan <3 x float> %vec, %vec
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%d_vec = fdiv nnan <3 x float> %vec, %vec
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; CHECK: %e = frem nnan float %x, %y
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%e = frem nnan float %x, %y
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; CHECK: %e_vec = frem nnan <3 x float> %vec, %vec
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%e_vec = frem nnan <3 x float> %vec, %vec
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; CHECK: %f = fneg nnan float %x
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%f = fneg nnan float %x
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; CHECK: %f_vec = fneg nnan <3 x float> %vec
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%f_vec = fneg nnan <3 x float> %vec
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; CHECK: ret float %f
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ret float %f
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}
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; CHECK: @contract(
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define float @contract(float %x, float %y) {
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entry:
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; CHECK: %a = fsub contract float %x, %y
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%a = fsub contract float %x, %y
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; CHECK: %b = fadd contract float %x, %y
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%b = fadd contract float %x, %y
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; CHECK: %c = fmul contract float %a, %b
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%c = fmul contract float %a, %b
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ret float %c
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}
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; CHECK: @reassoc(
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define float @reassoc(float %x, float %y) {
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; CHECK: %a = fsub reassoc float %x, %y
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%a = fsub reassoc float %x, %y
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; CHECK: %b = fmul reassoc float %x, %y
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%b = fmul reassoc float %x, %y
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; CHECK: %c = call reassoc float @foo(float %b)
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%c = call reassoc float @foo(float %b)
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ret float %c
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}
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; CHECK: @afn(
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define float @afn(float %x, float %y) {
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; CHECK: %a = fdiv afn float %x, %y
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%a = fdiv afn float %x, %y
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; CHECK: %b = frem afn float %x, %y
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%b = frem afn float %x, %y
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; CHECK: %c = call afn float @foo(float %b)
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%c = call afn float @foo(float %b)
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ret float %c
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}
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; CHECK: no_nan_inf
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define float @no_nan_inf(float %x, float %y) {
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entry:
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; CHECK: %vec = load <3 x float>, <3 x float>* @vec
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%vec = load <3 x float>, <3 x float>* @vec
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; CHECK: %select = load i1, i1* @select
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%select = load i1, i1* @select
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; CHECK: %arr = load [3 x float], [3 x float]* @arr
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%arr = load [3 x float], [3 x float]* @arr
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; CHECK: %a = fadd nnan ninf float %x, %y
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%a = fadd ninf nnan float %x, %y
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; CHECK: %a_vec = fadd nnan <3 x float> %vec, %vec
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%a_vec = fadd nnan <3 x float> %vec, %vec
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; CHECK: %b = fsub nnan float %x, %y
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%b = fsub nnan float %x, %y
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; CHECK: %b_vec = fsub nnan ninf <3 x float> %vec, %vec
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%b_vec = fsub ninf nnan <3 x float> %vec, %vec
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; CHECK: %c = fmul nnan float %x, %y
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%c = fmul nnan float %x, %y
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; CHECK: %c_vec = fmul nnan <3 x float> %vec, %vec
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%c_vec = fmul nnan <3 x float> %vec, %vec
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; CHECK: %d = fdiv nnan ninf float %x, %y
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%d = fdiv ninf nnan float %x, %y
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; CHECK: %d_vec = fdiv nnan <3 x float> %vec, %vec
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%d_vec = fdiv nnan <3 x float> %vec, %vec
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; CHECK: %e = frem nnan float %x, %y
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%e = frem nnan float %x, %y
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; CHECK: %e_vec = frem nnan ninf <3 x float> %vec, %vec
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%e_vec = frem ninf nnan <3 x float> %vec, %vec
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; CHECK: ret float %e
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ret float %e
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}
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; CHECK: mixed_flags
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define float @mixed_flags(float %x, float %y) {
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entry:
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; CHECK: %vec = load <3 x float>, <3 x float>* @vec
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%vec = load <3 x float>, <3 x float>* @vec
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; CHECK: %select = load i1, i1* @select
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%select = load i1, i1* @select
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; CHECK: %arr = load [3 x float], [3 x float]* @arr
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%arr = load [3 x float], [3 x float]* @arr
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; CHECK: %a = fadd nnan ninf afn float %x, %y
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%a = fadd ninf nnan afn float %x, %y
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; CHECK: %a_vec = fadd reassoc nnan <3 x float> %vec, %vec
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%a_vec = fadd reassoc nnan <3 x float> %vec, %vec
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; CHECK: %b = fsub fast float %x, %y
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%b = fsub nnan nsz fast float %x, %y
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; CHECK: %b_vec = fsub nnan <3 x float> %vec, %vec
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%b_vec = fsub nnan <3 x float> %vec, %vec
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; CHECK: %c = fmul fast float %x, %y
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%c = fmul nsz fast arcp float %x, %y
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; CHECK: %c_vec = fmul nsz <3 x float> %vec, %vec
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%c_vec = fmul nsz <3 x float> %vec, %vec
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; CHECK: %d = fdiv nnan ninf arcp float %x, %y
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%d = fdiv arcp ninf nnan float %x, %y
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; CHECK: %d_vec = fdiv fast <3 x float> %vec, %vec
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%d_vec = fdiv fast nnan arcp <3 x float> %vec, %vec
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; CHECK: %e = frem nnan nsz float %x, %y
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%e = frem nnan nsz float %x, %y
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; CHECK: %e_vec = frem nnan <3 x float> %vec, %vec
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%e_vec = frem nnan <3 x float> %vec, %vec
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; CHECK: %f = fneg nnan nsz float %x
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%f = fneg nnan nsz float %x
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; CHECK: %f_vec = fneg fast <3 x float> %vec
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%f_vec = fneg fast <3 x float> %vec
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; CHECK: ret float %f
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ret float %f
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}
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