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test/CodeGen/AArch64/csr-split.ll
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| ; RUN: llc -mtriple=aarch64-unknown-linux-gnu < %s | FileCheck %s | |||||
| target datalayout = "e-m:e-i8:8:32-i16:16:32-i64:64-i128:128-n32:64-S128" | |||||
| target triple = "aarch64-linaro-linux-gnueabi" | |||||
| ; After splitting, instead of assigning CSR, ShrinkWrap is enabled and prologue | |||||
| ; are moved from entry to BB#1. | |||||
| define i32 @test1(i32 %x, i32 %y, i32* nocapture %P) local_unnamed_addr { | |||||
| ; CHECK-LABEL: test1: | |||||
| ; CHECK-LABEL: BB#0: | |||||
| ; CHECK-NOT: stp | |||||
| ; CHECK-LABEL: BB#1: | |||||
| ; CHECK: stp x{{[0-9]+}}, x{{[0-9]+}}, [sp, {{.*}}] | |||||
| entry: | |||||
| %idxprom = sext i32 %x to i64 | |||||
| %arrayidx = getelementptr inbounds i32, i32* %P, i64 %idxprom | |||||
| %0 = load i32, i32* %arrayidx, align 4 | |||||
| %idxprom1 = sext i32 %y to i64 | |||||
| %arrayidx2 = getelementptr inbounds i32, i32* %P, i64 %idxprom1 | |||||
| %1 = load i32, i32* %arrayidx2, align 4 | |||||
| %add = add nsw i32 %1, %0 | |||||
| %cmp = icmp eq i32 %add, 0 | |||||
| br i1 %cmp, label %cleanup, label %if.end | |||||
| if.end: ; preds = %entry | |||||
| store i32 %add, i32* %P, align 4 | |||||
| tail call void @func() | |||||
| br label %cleanup | |||||
| cleanup: ; preds = %entry, %if.end | |||||
| %retval.0 = phi i32 [ %x, %if.end ], [ 0, %entry ] | |||||
| ret i32 %retval.0 | |||||
| } | |||||
| declare void @func() | |||||