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llvm-project/llvm/test/Transforms/Attributor/nofpclass-phiselect.ll
David Green 0f919444ad
[ValueTracking] Handle recursive phis in knownFPClass (#114008) 
As a follow-on to 113686, this breaks the recursion between phi nodes
that have p1 = phi(x, p2) and p2 = phi(y, p1). The knownFPClass can be
calculated from the classes of p1 and p2.
2024-11-01 13:38:29 +00:00

201 lines
6.5 KiB
LLVM
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; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 2
; RUN: opt -aa-pipeline=basic-aa -passes=attributor -attributor-manifest-internal -S < %s | FileCheck %s
define float @phi_select(i1 %c, float nofpclass(inf) %base, float nofpclass(inf) %arg) {
; CHECK-LABEL: define nofpclass(inf) float @phi_select
; CHECK-SAME: (i1 [[C:%.*]], float nofpclass(inf) [[BASE:%.*]], float nofpclass(inf) [[ARG:%.*]]) #[[ATTR0:[0-9]+]] {
; CHECK-NEXT: entry:
; CHECK-NEXT: br label [[LOOP:%.*]]
; CHECK: loop:
; CHECK-NEXT: [[PHI:%.*]] = phi float [ [[BASE]], [[ENTRY:%.*]] ], [ [[SELECT:%.*]], [[LOOP]] ]
; CHECK-NEXT: [[SELECT]] = select i1 [[C]], float [[PHI]], float [[ARG]]
; CHECK-NEXT: br i1 [[C]], label [[LOOP]], label [[EXIT:%.*]]
; CHECK: exit:
; CHECK-NEXT: ret float [[SELECT]]
;
entry:
br label %loop
loop:
%phi = phi float [ %base, %entry ], [ %select, %loop ]
%select = select i1 %c, float %phi, float %arg
br i1 %c, label %loop, label %exit
exit:
ret float %select
}
define float @phi_select_c(i1 %c, float nofpclass(inf) %base, float nofpclass(inf) %arg) {
; CHECK-LABEL: define nofpclass(inf) float @phi_select_c
; CHECK-SAME: (i1 [[C:%.*]], float nofpclass(inf) [[BASE:%.*]], float nofpclass(inf) [[ARG:%.*]]) #[[ATTR0]] {
; CHECK-NEXT: entry:
; CHECK-NEXT: br label [[LOOP:%.*]]
; CHECK: loop:
; CHECK-NEXT: [[PHI:%.*]] = phi float [ [[BASE]], [[ENTRY:%.*]] ], [ [[SELECT:%.*]], [[LOOP]] ]
; CHECK-NEXT: [[SELECT]] = select i1 [[C]], float [[ARG]], float [[PHI]]
; CHECK-NEXT: br i1 [[C]], label [[LOOP]], label [[EXIT:%.*]]
; CHECK: exit:
; CHECK-NEXT: ret float [[SELECT]]
;
entry:
br label %loop
loop:
%phi = phi float [ %base, %entry ], [ %select, %loop ]
%select = select i1 %c, float %arg, float %phi
br i1 %c, label %loop, label %exit
exit:
ret float %select
}
define float @phi_select_onlybase(i1 %c, float nofpclass(inf) %base, float %arg) {
; CHECK-LABEL: define float @phi_select_onlybase
; CHECK-SAME: (i1 [[C:%.*]], float nofpclass(inf) [[BASE:%.*]], float [[ARG:%.*]]) #[[ATTR0]] {
; CHECK-NEXT: entry:
; CHECK-NEXT: br label [[LOOP:%.*]]
; CHECK: loop:
; CHECK-NEXT: [[PHI:%.*]] = phi float [ [[BASE]], [[ENTRY:%.*]] ], [ [[SELECT:%.*]], [[LOOP]] ]
; CHECK-NEXT: [[SELECT]] = select i1 [[C]], float [[PHI]], float [[ARG]]
; CHECK-NEXT: br i1 [[C]], label [[LOOP]], label [[EXIT:%.*]]
; CHECK: exit:
; CHECK-NEXT: ret float [[SELECT]]
;
entry:
br label %loop
loop:
%phi = phi float [ %base, %entry ], [ %select, %loop ]
%select = select i1 %c, float %phi, float %arg
br i1 %c, label %loop, label %exit
exit:
ret float %select
}
define float @phi_select_onlyarg(i1 %c, float %base, float nofpclass(inf) %arg) {
; CHECK-LABEL: define float @phi_select_onlyarg
; CHECK-SAME: (i1 [[C:%.*]], float [[BASE:%.*]], float nofpclass(inf) [[ARG:%.*]]) #[[ATTR0]] {
; CHECK-NEXT: entry:
; CHECK-NEXT: br label [[LOOP:%.*]]
; CHECK: loop:
; CHECK-NEXT: [[PHI:%.*]] = phi float [ [[BASE]], [[ENTRY:%.*]] ], [ [[SELECT:%.*]], [[LOOP]] ]
; CHECK-NEXT: [[SELECT]] = select i1 [[C]], float [[PHI]], float [[ARG]]
; CHECK-NEXT: br i1 [[C]], label [[LOOP]], label [[EXIT:%.*]]
; CHECK: exit:
; CHECK-NEXT: ret float [[SELECT]]
;
entry:
br label %loop
loop:
%phi = phi float [ %base, %entry ], [ %select, %loop ]
%select = select i1 %c, float %phi, float %arg
br i1 %c, label %loop, label %exit
exit:
ret float %select
}
define float @phi_phi(i1 %c, float nofpclass(inf) %base, float nofpclass(inf) %arg) {
; CHECK-LABEL: define nofpclass(inf) float @phi_phi
; CHECK-SAME: (i1 [[C:%.*]], float nofpclass(inf) [[BASE:%.*]], float nofpclass(inf) [[ARG:%.*]]) #[[ATTR0]] {
; CHECK-NEXT: entry:
; CHECK-NEXT: br label [[LOOP:%.*]]
; CHECK: loop:
; CHECK-NEXT: [[PHI:%.*]] = phi float [ [[BASE]], [[ENTRY:%.*]] ], [ [[PHI2:%.*]], [[EXIT1:%.*]] ]
; CHECK-NEXT: br label [[INNER:%.*]]
; CHECK: inner:
; CHECK-NEXT: [[PHI2]] = phi float [ [[PHI]], [[LOOP]] ], [ [[ARG]], [[INNER]] ]
; CHECK-NEXT: br i1 [[C]], label [[INNER]], label [[EXIT1]]
; CHECK: exit1:
; CHECK-NEXT: br i1 [[C]], label [[LOOP]], label [[EXIT:%.*]]
; CHECK: exit:
; CHECK-NEXT: ret float [[PHI2]]
;
entry:
br label %loop
loop:
%phi = phi float [ %base, %entry ], [ %phi2, %exit1 ]
br label %inner
inner:
%phi2 = phi float [ %phi, %loop ], [ %arg, %inner ]
br i1 %c, label %inner, label %exit1
exit1:
br i1 %c, label %loop, label %exit
exit:
ret float %phi2
}
define float @phi_phi_onlybase(i1 %c, float nofpclass(inf) %base, float %arg) {
; CHECK-LABEL: define float @phi_phi_onlybase
; CHECK-SAME: (i1 [[C:%.*]], float nofpclass(inf) [[BASE:%.*]], float [[ARG:%.*]]) #[[ATTR0]] {
; CHECK-NEXT: entry:
; CHECK-NEXT: br label [[LOOP:%.*]]
; CHECK: loop:
; CHECK-NEXT: [[PHI:%.*]] = phi float [ [[BASE]], [[ENTRY:%.*]] ], [ [[PHI2:%.*]], [[EXIT1:%.*]] ]
; CHECK-NEXT: br label [[INNER:%.*]]
; CHECK: inner:
; CHECK-NEXT: [[PHI2]] = phi float [ [[PHI]], [[LOOP]] ], [ [[ARG]], [[INNER]] ]
; CHECK-NEXT: br i1 [[C]], label [[INNER]], label [[EXIT1]]
; CHECK: exit1:
; CHECK-NEXT: br i1 [[C]], label [[LOOP]], label [[EXIT:%.*]]
; CHECK: exit:
; CHECK-NEXT: ret float [[PHI2]]
;
entry:
br label %loop
loop:
%phi = phi float [ %base, %entry ], [ %phi2, %exit1 ]
br label %inner
inner:
%phi2 = phi float [ %phi, %loop ], [ %arg, %inner ]
br i1 %c, label %inner, label %exit1
exit1:
br i1 %c, label %loop, label %exit
exit:
ret float %phi2
}
define float @phi_phi_onlyarg(i1 %c, float %base, float nofpclass(inf) %arg) {
; CHECK-LABEL: define float @phi_phi_onlyarg
; CHECK-SAME: (i1 [[C:%.*]], float [[BASE:%.*]], float nofpclass(inf) [[ARG:%.*]]) #[[ATTR0]] {
; CHECK-NEXT: entry:
; CHECK-NEXT: br label [[LOOP:%.*]]
; CHECK: loop:
; CHECK-NEXT: [[PHI:%.*]] = phi float [ [[BASE]], [[ENTRY:%.*]] ], [ [[PHI2:%.*]], [[EXIT1:%.*]] ]
; CHECK-NEXT: br label [[INNER:%.*]]
; CHECK: inner:
; CHECK-NEXT: [[PHI2]] = phi float [ [[PHI]], [[LOOP]] ], [ [[ARG]], [[INNER]] ]
; CHECK-NEXT: br i1 [[C]], label [[INNER]], label [[EXIT1]]
; CHECK: exit1:
; CHECK-NEXT: br i1 [[C]], label [[LOOP]], label [[EXIT:%.*]]
; CHECK: exit:
; CHECK-NEXT: ret float [[PHI2]]
;
entry:
br label %loop
loop:
%phi = phi float [ %base, %entry ], [ %phi2, %exit1 ]
br label %inner
inner:
%phi2 = phi float [ %phi, %loop ], [ %arg, %inner ]
br i1 %c, label %inner, label %exit1
exit1:
br i1 %c, label %loop, label %exit
exit:
ret float %phi2
}
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