derek.holloway
7502bf64a4
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89 lines
2.5 KiB
LLVM
89 lines
2.5 KiB
LLVM
; RUN: llc -O2 -ppc-reduce-cr-logicals -print-machine-bfi -o - %s 2>&1 | FileCheck %s
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target datalayout = "e-m:e-i64:64-n32:64"
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target triple = "powerpc64le-grtev4-linux-gnu"
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; First block frequency info
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;CHECK: block-frequency-info: loop_test
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;CHECK-NEXT: - BB0[entry]: float = 1.0, int = {{.*}}
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;CHECK-NEXT: - BB1[for.check]: float = 2.6667, int = {{.*}}
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;CHECK-NEXT: - BB2[test1]: float = 1.6667, int = {{.*}}
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;CHECK-NEXT: - BB3[optional1]: float = 0.625, int = {{.*}}
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;CHECK: block-frequency-info: loop_test
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;CHECK: block-frequency-info: loop_test
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;CHECK: block-frequency-info: loop_test
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; Last block frequency info
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;CHECK: block-frequency-info: loop_test
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;CHECK-NEXT: - BB0[entry]: float = 1.0, int = {{.*}}
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;CHECK-NEXT: - BB1[for.check]: float = 2.6667, int = {{.*}}
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;CHECK-NEXT: - BB2[for.check]: float = 2.1667, int = {{.*}}
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;CHECK-NEXT: - BB3[test1]: float = 1.6667, int = {{.*}}
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;CHECK-NEXT: - BB4[optional1]: float = 0.625, int = {{.*}}
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define void @loop_test(ptr %tags, i32 %count) {
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entry:
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br label %for.check
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for.check:
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%count.loop = phi i32 [%count, %entry], [%count.sub, %for.latch]
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%done.count = icmp ugt i32 %count.loop, 0
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%tag_ptr = getelementptr inbounds i32, ptr %tags, i32 %count
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%tag = load i32, ptr %tag_ptr
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%done.tag = icmp eq i32 %tag, 0
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%done = and i1 %done.count, %done.tag
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br i1 %done, label %test1, label %exit, !prof !1
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test1:
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%tagbit1 = and i32 %tag, 1
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%tagbit1eq0 = icmp eq i32 %tagbit1, 0
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br i1 %tagbit1eq0, label %test2, label %optional1, !prof !1
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optional1:
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call void @a()
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call void @a()
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call void @a()
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call void @a()
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br label %test2
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test2:
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%tagbit2 = and i32 %tag, 2
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%tagbit2eq0 = icmp eq i32 %tagbit2, 0
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br i1 %tagbit2eq0, label %test3, label %optional2, !prof !1
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optional2:
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call void @b()
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call void @b()
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call void @b()
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call void @b()
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br label %test3
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test3:
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%tagbit3 = and i32 %tag, 4
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%tagbit3eq0 = icmp eq i32 %tagbit3, 0
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br i1 %tagbit3eq0, label %test4, label %optional3, !prof !1
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optional3:
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call void @c()
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call void @c()
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call void @c()
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call void @c()
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br label %test4
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test4:
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%tagbit4 = and i32 %tag, 8
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%tagbit4eq0 = icmp eq i32 %tagbit4, 0
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br i1 %tagbit4eq0, label %for.latch, label %optional4, !prof !1
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optional4:
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call void @d()
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call void @d()
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call void @d()
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call void @d()
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br label %for.latch
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for.latch:
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%count.sub = sub i32 %count.loop, 1
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br label %for.check
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exit:
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ret void
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}
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declare void @a()
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declare void @b()
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declare void @c()
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declare void @d()
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!1 = !{!"branch_weights", i32 5, i32 3}
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