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TheRock/compiler/amd-llvm/llvm/test/Transforms/FunctionSpecialization/phi-nodes-non-constfoldable.ll
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derek.holloway 7502bf64a4
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Flatten subprojects into a single base monorepo
2026-09-02 16:34:47 -07:00

55 lines
1.7 KiB
LLVM

; RUN: opt -passes="ipsccp<func-spec>" -funcspec-min-function-size=10 -funcspec-for-literal-constant -S < %s | FileCheck %s
define i64 @bar(i1 %c1, i1 %c2, i1 %c3, i1 %c4, i64 %x1) {
; CHECK-LABEL: define i64 @bar(
; CHECK-SAME: i1 [[C1:%.*]], i1 [[C2:%.*]], i1 [[C3:%.*]], i1 [[C4:%.*]], i64 [[X1:%.*]]) {
; CHECK-NEXT: entry:
; CHECK-NEXT: [[F1:%.*]] = call i64 @foo(i64 3, i64 4, i1 [[C1]], i1 [[C2]], i1 [[C3]], i1 [[C4]])
; CHECK-NEXT: [[F2:%.*]] = call i64 @foo(i64 4, i64 [[X1]], i1 [[C1]], i1 [[C2]], i1 [[C3]], i1 [[C4]])
; CHECK-NEXT: [[F3:%.*]] = call i64 @foo.specialized.1(i64 3, i64 3, i1 [[C1]], i1 [[C2]], i1 [[C3]], i1 [[C4]])
; CHECK-NEXT: [[ADD:%.*]] = add i64 [[F1]], [[F2]]
; CHECK-NEXT: [[ADD2:%.*]] = add i64 [[ADD]], [[F3]]
; CHECK-NEXT: ret i64 [[ADD2]]
;
entry:
%f1 = call i64 @foo(i64 3, i64 4, i1 %c1, i1 %c2, i1 %c3, i1 %c4)
%f2 = call i64 @foo(i64 4, i64 %x1, i1 %c1, i1 %c2, i1 %c3, i1 %c4)
%f3 = call i64 @foo(i64 3, i64 3, i1 %c1, i1 %c2, i1 %c3, i1 %c4)
%add = add i64 %f1, %f2
%add2 = add i64 %add, %f3
ret i64 %add2
}
define internal i64 @foo(i64 %n, i64 %m, i1 %c1, i1 %c2, i1 %c3, i1 %c4) {
entry:
br i1 %c1, label %l1, label %l4
l1:
%phi1 = phi i64 [ %n, %entry ], [ %phi2, %l2 ]
%add = add i64 %phi1, 1
%div = sdiv i64 %add, 2
br i1 %c2, label %l1_5, label %exit
l1_5:
br i1 %c3, label %l2, label %l3
l2:
%phi2 = phi i64 [ %phi1, %l1_5 ], [ %phi3, %l3 ]
br label %l1
l3:
%phi3 = phi i64 [ %phi1, %l1_5 ], [ %m, %l4 ]
br i1 %c2, label %l4, label %l2
l4:
%phi4 = phi i64 [ %n, %entry ], [ %phi3, %l3 ]
%sub = sub i64 %phi4, 1
%mul = mul i64 %sub, 2
br i1 %c4, label %l3, label %exit
exit:
%res = phi i64 [ %div, %l1 ], [ %mul, %l4]
ret i64 %res
}