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50c405416c
This patch removes all weight-related interfaces from BPI and replace them by probability versions. With this patch, we won't use edge weight anymore in either IR or MC passes. Edge probabilitiy is a better representation in terms of CFG update and validation. Differential revision: http://reviews.llvm.org/D15519 llvm-svn: 256263
44 lines
844 B
LLVM
44 lines
844 B
LLVM
; RUN: opt -S -jump-threading %s | FileCheck %s
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; Test if edge weights are properly updated after jump threading.
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; CHECK: !2 = !{!"branch_weights", i32 1629125526, i32 518358122}
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define void @foo(i32 %n) !prof !0 {
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entry:
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%cmp = icmp sgt i32 %n, 10
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br i1 %cmp, label %if.then.1, label %if.else.1, !prof !1
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if.then.1:
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tail call void @a()
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br label %if.cond
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if.else.1:
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tail call void @b()
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br label %if.cond
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if.cond:
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%cmp1 = icmp sgt i32 %n, 5
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br i1 %cmp1, label %if.then.2, label %if.else.2, !prof !2
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if.then.2:
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tail call void @c()
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br label %if.end
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if.else.2:
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tail call void @d()
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br label %if.end
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if.end:
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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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!0 = !{!"function_entry_count", i64 1}
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!1 = !{!"branch_weights", i32 10, i32 5}
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!2 = !{!"branch_weights", i32 10, i32 1}
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