mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-08-04 07:29:20 +00:00
d50bcb2162
This patch adds support for the CRJ and CGRJ instructions. Support for the immediate forms will be a separate patch. The architecture has a large number of comparison instructions. I think it's generally better to concentrate on using the "best" comparison instruction first and foremost, then only use something like CRJ if CR really was the natual choice of comparison instruction. The patch therefore opportunistically converts separate CR and BRC instructions into a single CRJ while emitting instructions in ISelLowering. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@182764 91177308-0d34-0410-b5e6-96231b3b80d8
90 lines
1.8 KiB
LLVM
90 lines
1.8 KiB
LLVM
; Test all condition-code masks that are relevant for CRJ.
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;
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; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s
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declare i32 @foo();
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define void @f1(i32 %target) {
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; CHECK: f1:
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; CHECK: .cfi_def_cfa_offset
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; CHECK: .L[[LABEL:.*]]:
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; CHECK: crje %r2, {{%r[0-9]+}}, .L[[LABEL]]
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br label %loop
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loop:
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%val = call i32 @foo()
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%cond = icmp eq i32 %val, %target
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br i1 %cond, label %loop, label %exit
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exit:
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ret void
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}
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define void @f2(i32 %target) {
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; CHECK: f2:
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; CHECK: .cfi_def_cfa_offset
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; CHECK: .L[[LABEL:.*]]:
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; CHECK: crjlh %r2, {{%r[0-9]+}}, .L[[LABEL]]
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br label %loop
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loop:
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%val = call i32 @foo()
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%cond = icmp ne i32 %val, %target
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br i1 %cond, label %loop, label %exit
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exit:
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ret void
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}
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define void @f3(i32 %target) {
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; CHECK: f3:
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; CHECK: .cfi_def_cfa_offset
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; CHECK: .L[[LABEL:.*]]:
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; CHECK: crjle %r2, {{%r[0-9]+}}, .L[[LABEL]]
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br label %loop
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loop:
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%val = call i32 @foo()
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%cond = icmp sle i32 %val, %target
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br i1 %cond, label %loop, label %exit
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exit:
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ret void
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}
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define void @f4(i32 %target) {
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; CHECK: f4:
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; CHECK: .cfi_def_cfa_offset
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; CHECK: .L[[LABEL:.*]]:
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; CHECK: crjl %r2, {{%r[0-9]+}}, .L[[LABEL]]
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br label %loop
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loop:
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%val = call i32 @foo()
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%cond = icmp slt i32 %val, %target
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br i1 %cond, label %loop, label %exit
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exit:
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ret void
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}
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define void @f5(i32 %target) {
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; CHECK: f5:
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; CHECK: .cfi_def_cfa_offset
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; CHECK: .L[[LABEL:.*]]:
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; CHECK: crjh %r2, {{%r[0-9]+}}, .L[[LABEL]]
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br label %loop
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loop:
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%val = call i32 @foo()
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%cond = icmp sgt i32 %val, %target
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br i1 %cond, label %loop, label %exit
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exit:
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ret void
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}
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define void @f6(i32 %target) {
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; CHECK: f6:
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; CHECK: .cfi_def_cfa_offset
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; CHECK: .L[[LABEL:.*]]:
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; CHECK: crjhe %r2, {{%r[0-9]+}}, .L[[LABEL]]
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br label %loop
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loop:
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%val = call i32 @foo()
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%cond = icmp sge i32 %val, %target
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br i1 %cond, label %loop, label %exit
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exit:
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ret void
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}
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