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https://github.com/RPCS3/llvm-mirror.git
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64c2c99226
This fixes a bug where the input register was not defined for the 'tbz/tbnz' instruction. This happened, because we folded the 'and' instruction from a different basic block. This fixes rdar://problem/18784013. llvm-svn: 220704
142 lines
3.1 KiB
LLVM
142 lines
3.1 KiB
LLVM
; RUN: llc -aarch64-atomic-cfg-tidy=0 -verify-machineinstrs -mtriple=aarch64-apple-darwin < %s | FileCheck %s
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; RUN: llc -fast-isel -fast-isel-abort -aarch64-atomic-cfg-tidy=0 -verify-machineinstrs -mtriple=aarch64-apple-darwin < %s | FileCheck %s
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define i32 @icmp_eq_i8(i8 zeroext %a) {
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; CHECK-LABEL: icmp_eq_i8
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; CHECK: tbz {{w[0-9]+}}, #0, {{LBB.+_2}}
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%1 = and i8 %a, 1
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%2 = icmp eq i8 %1, 0
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br i1 %2, label %bb1, label %bb2, !prof !0
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bb1:
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ret i32 1
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bb2:
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ret i32 0
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}
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define i32 @icmp_eq_i16(i16 zeroext %a) {
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; CHECK-LABEL: icmp_eq_i16
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; CHECK: tbz w0, #1, {{LBB.+_2}}
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%1 = and i16 %a, 2
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%2 = icmp eq i16 %1, 0
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br i1 %2, label %bb1, label %bb2, !prof !0
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bb1:
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ret i32 1
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bb2:
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ret i32 0
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}
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define i32 @icmp_eq_i32(i32 %a) {
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; CHECK-LABEL: icmp_eq_i32
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; CHECK: tbz w0, #2, {{LBB.+_2}}
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%1 = and i32 %a, 4
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%2 = icmp eq i32 %1, 0
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br i1 %2, label %bb1, label %bb2, !prof !0
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bb1:
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ret i32 1
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bb2:
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ret i32 0
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}
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define i32 @icmp_eq_i64_1(i64 %a) {
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; CHECK-LABEL: icmp_eq_i64_1
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; CHECK: tbz w0, #3, {{LBB.+_2}}
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%1 = and i64 %a, 8
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%2 = icmp eq i64 %1, 0
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br i1 %2, label %bb1, label %bb2, !prof !0
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bb1:
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ret i32 1
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bb2:
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ret i32 0
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}
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define i32 @icmp_eq_i64_2(i64 %a) {
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; CHECK-LABEL: icmp_eq_i64_2
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; CHECK: tbz x0, #32, {{LBB.+_2}}
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%1 = and i64 %a, 4294967296
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%2 = icmp eq i64 %1, 0
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br i1 %2, label %bb1, label %bb2, !prof !0
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bb1:
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ret i32 1
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bb2:
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ret i32 0
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}
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define i32 @icmp_ne_i8(i8 zeroext %a) {
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; CHECK-LABEL: icmp_ne_i8
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; CHECK: tbnz w0, #0, {{LBB.+_2}}
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%1 = and i8 %a, 1
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%2 = icmp ne i8 %1, 0
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br i1 %2, label %bb1, label %bb2, !prof !0
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bb1:
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ret i32 1
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bb2:
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ret i32 0
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}
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define i32 @icmp_ne_i16(i16 zeroext %a) {
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; CHECK-LABEL: icmp_ne_i16
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; CHECK: tbnz w0, #1, {{LBB.+_2}}
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%1 = and i16 %a, 2
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%2 = icmp ne i16 %1, 0
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br i1 %2, label %bb1, label %bb2, !prof !0
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bb1:
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ret i32 1
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bb2:
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ret i32 0
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}
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define i32 @icmp_ne_i32(i32 %a) {
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; CHECK-LABEL: icmp_ne_i32
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; CHECK: tbnz w0, #2, {{LBB.+_2}}
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%1 = and i32 %a, 4
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%2 = icmp ne i32 %1, 0
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br i1 %2, label %bb1, label %bb2, !prof !0
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bb1:
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ret i32 1
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bb2:
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ret i32 0
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}
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define i32 @icmp_ne_i64_1(i64 %a) {
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; CHECK-LABEL: icmp_ne_i64_1
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; CHECK: tbnz w0, #3, {{LBB.+_2}}
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%1 = and i64 %a, 8
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%2 = icmp ne i64 %1, 0
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br i1 %2, label %bb1, label %bb2, !prof !0
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bb1:
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ret i32 1
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bb2:
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ret i32 0
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}
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define i32 @icmp_ne_i64_2(i64 %a) {
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; CHECK-LABEL: icmp_ne_i64_2
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; CHECK: tbnz x0, #32, {{LBB.+_2}}
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%1 = and i64 %a, 4294967296
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%2 = icmp ne i64 %1, 0
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br i1 %2, label %bb1, label %bb2, !prof !0
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bb1:
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ret i32 1
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bb2:
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ret i32 0
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}
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; Test that we don't fold the 'and' instruction into the compare.
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define i32 @icmp_eq_and_i32(i32 %a, i1 %c) {
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; CHECK-LABEL: icmp_eq_and_i32
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; CHECK: and [[REG:w[0-9]+]], w0, #0x4
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; CHECK-NEXT: cbz [[REG]], {{LBB.+_3}}
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%1 = and i32 %a, 4
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br i1 %c, label %bb0, label %bb2
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bb0:
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%2 = icmp eq i32 %1, 0
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br i1 %2, label %bb1, label %bb2, !prof !0
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bb1:
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ret i32 1
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bb2:
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ret i32 0
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}
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!0 = metadata !{metadata !"branch_weights", i32 0, i32 2147483647}
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!1 = metadata !{metadata !"branch_weights", i32 2147483647, i32 0}
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