6502/llvm-6502
1
0
Fork 0
mirror of https://github.com/c64scene-ar/llvm-6502.git synced 2025-07-24 22:24:54 +00:00
Code Issues Projects Releases Wiki Activity

Add minnum / maxnum intrinsics

Browse Source 
These are named following the IEEE-754 names for these
functions, rather than the libm fmin / fmax to avoid
possible ambiguities. Some languages may implement something
resembling fmin / fmax which return NaN if either operand is
to propagate errors. These implement the IEEE-754 semantics
of returning the other operand if either is a NaN representing
missing data.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@220341 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Matt Arsenault
2014-10-21 23:00:20 +00:00
parent cb3866e72e
commit 252134602f
14 changed files with 773 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files

35
test/Transforms/SimplifyCFG/speculate-math.ll
View File

@@ -4,6 +4,8 @@ declare float @llvm.sqrt.f32(float) nounwind readonly
declare float @llvm.fma.f32(float, float, float) nounwind readonly
declare float @llvm.fmuladd.f32(float, float, float) nounwind readonly
declare float @llvm.fabs.f32(float) nounwind readonly
declare float @llvm.minnum.f32(float, float) nounwind readonly
declare float @llvm.maxnum.f32(float, float) nounwind readonly
; CHECK-LABEL: @sqrt_test(
; CHECK: select
@@ -73,3 +75,36 @@ test_fmuladd.exit: ; preds = %cond.else.i, %en
ret void
}
; CHECK-LABEL: @minnum_test(
; CHECK: select
define void @minnum_test(float addrspace(1)* noalias nocapture %out, float %a, float %b) nounwind {
entry:
%cmp.i = fcmp olt float %a, 0.000000e+00
br i1 %cmp.i, label %test_minnum.exit, label %cond.else.i
cond.else.i: ; preds = %entry
%0 = tail call float @llvm.minnum.f32(float %a, float %b) nounwind readnone
br label %test_minnum.exit
test_minnum.exit: ; preds = %cond.else.i, %entry
%cond.i = phi float [ %0, %cond.else.i ], [ 0x7FF8000000000000, %entry ]
store float %cond.i, float addrspace(1)* %out, align 4
ret void
}
; CHECK-LABEL: @maxnum_test(
; CHECK: select
define void @maxnum_test(float addrspace(1)* noalias nocapture %out, float %a, float %b) nounwind {
entry:
%cmp.i = fcmp olt float %a, 0.000000e+00
br i1 %cmp.i, label %test_maxnum.exit, label %cond.else.i
cond.else.i: ; preds = %entry
%0 = tail call float @llvm.maxnum.f32(float %a, float %b) nounwind readnone
br label %test_maxnum.exit
test_maxnum.exit: ; preds = %cond.else.i, %entry
%cond.i = phi float [ %0, %cond.else.i ], [ 0x7FF8000000000000, %entry ]
store float %cond.i, float addrspace(1)* %out, align 4
ret void
}