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https://github.com/c64scene-ar/llvm-6502.git
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57fc82d409
in addition to ZERO_EXTEND and SIGN_EXTEND. Fix a bug in the way it checked for live-out values, and simplify the way it find users by using SDNode::use_iterator's (relatively) new features. Also, make it slightly more permissive on targets with free truncates. In SelectionDAGBuild, avoid creating ANY_EXTEND nodes that are larger than necessary. If the target's SwitchAmountTy has enough bits, use it. This exposes the truncate to optimization early, enabling more optimizations. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@68670 91177308-0d34-0410-b5e6-96231b3b80d8
35 lines
900 B
LLVM
35 lines
900 B
LLVM
; RUN: llvm-as < %s | llc -march=x86 | grep mov | count 1
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; Do zextload, instead of a load and a separate zext.
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target datalayout = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:64:64-v128:128:128-a0:0:64-f80:128:128"
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target triple = "i386-apple-darwin9.6"
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%struct.move_s = type { i32, i32, i32, i32, i32, i32 }
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%struct.node_t = type { i8, i8, i8, i8, i32, i32, %struct.node_t**, %struct.node_t*, %struct.move_s }
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define fastcc void @set_proof_and_disproof_numbers(%struct.node_t* nocapture %node) nounwind {
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entry:
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%0 = load i8* null, align 1 ; <i8> [#uses=1]
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switch i8 %0, label %return [
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i8 2, label %bb31
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i8 0, label %bb80
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i8 1, label %bb82
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i8 3, label %bb84
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]
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bb31: ; preds = %entry
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unreachable
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bb80: ; preds = %entry
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ret void
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bb82: ; preds = %entry
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ret void
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bb84: ; preds = %entry
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ret void
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return: ; preds = %entry
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ret void
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}
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