derek.holloway
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87 lines
2.4 KiB
LLVM
87 lines
2.4 KiB
LLVM
; Tests lowering of sfclass/dfclass compares.
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; Sub-optimal code
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; {
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; p0 = sfclass(r0,#16)
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; r0 = sfadd(r0,r0)
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; }
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; {
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; r2 = p0
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; }
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; {
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; if (p0.new) r0 = ##1065353216
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; p0 = cmp.eq(r2,#0)
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; jumpr r31
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; }
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; With the patterns added, we should be generating
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; {
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; p0 = sfclass(r0,#16)
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; r0 = sfadd(r0,r0)
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; }
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; {
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; if (!p0) r0 = ##1065353216
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; jumpr r31
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; }
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; RUN: llc -march=hexagon -stop-after=hexagon-isel %s -o - | FileCheck %s
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; CHECK: bb.0.entry1
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; CHECK: F2_sfclass
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; CHECK-NOT: C2_cmp
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; CHECK: C2_not
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; CHECK: F2_sfadd
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; Function Attrs: mustprogress nofree norecurse nosync nounwind willreturn memory(none)
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define float @test1(float noundef %x) {
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entry1:
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%0 = tail call i32 @llvm.hexagon.F2.sfclass(float %x, i32 16)
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%tobool.not = icmp eq i32 %0, 0
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%add = fadd float %x, %x
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%spec.select = select i1 %tobool.not, float 1.000000e+00, float %add
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ret float %spec.select
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}
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; CHECK: bb.0.entry2
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; CHECK: F2_sfclass
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; CHECK-NOT: C2_cmp
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; CHECK: F2_sfadd
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define float @test2(float noundef %x) {
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entry2:
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%0 = tail call i32 @llvm.hexagon.F2.sfclass(float %x, i32 16)
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%tobool.not = icmp eq i32 %0, 0
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%add = fadd float %x, %x
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%spec.select = select i1 %tobool.not, float %add, float 1.000000e+00
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ret float %spec.select
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}
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; CHECK: bb.0.entry3
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; CHECK: F2_dfclass
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; CHECK-NOT: C2_cmp
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; CHECK: C2_not
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; CHECK: F2_dfadd
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define double @test3(double noundef %x) {
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entry3:
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%0 = tail call i32 @llvm.hexagon.F2.dfclass(double %x, i32 16)
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%tobool.not = icmp eq i32 %0, 0
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%add = fadd double %x, %x
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%spec.select = select i1 %tobool.not, double 1.000000e+00, double %add
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ret double %spec.select
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}
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; CHECK: bb.0.entry4
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; CHECK: F2_dfclass
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; CHECK-NOT: C2_cmp
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; CHECK: F2_dfadd
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define double @test4(double noundef %x) {
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entry4:
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%0 = tail call i32 @llvm.hexagon.F2.dfclass(double %x, i32 16)
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%tobool.not = icmp eq i32 %0, 0
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%add = fadd double %x, %x
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%spec.select = select i1 %tobool.not, double %add, double 1.000000e+00
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ret double %spec.select
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}
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; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(none)
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declare i32 @llvm.hexagon.F2.dfclass(double, i32 immarg)
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; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(none)
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declare i32 @llvm.hexagon.F2.sfclass(float, i32 immarg)
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