From bf286b00e9e860a85adaab1214271e374267a033 Mon Sep 17 00:00:00 2001 From: Fangrui Song Date: Tue, 29 Dec 2020 21:26:30 -0800 Subject: [PATCH] [X86][test] Improve global address offset folding tests --- llvm/test/CodeGen/X86/fold-add-pcrel.ll | 41 ----------- llvm/test/CodeGen/X86/fold-add.ll | 125 +++++++++++++++++++++++++------- 2 files changed, 100 insertions(+), 66 deletions(-) delete mode 100644 llvm/test/CodeGen/X86/fold-add-pcrel.ll diff --git a/llvm/test/CodeGen/X86/fold-add-pcrel.ll b/llvm/test/CodeGen/X86/fold-add-pcrel.ll deleted file mode 100644 index 27a16b0..0000000 --- a/llvm/test/CodeGen/X86/fold-add-pcrel.ll +++ /dev/null @@ -1,41 +0,0 @@ -; RUN: llc -mtriple=x86_64 -relocation-model=static < %s | FileCheck --check-prefixes=CHECK,STATIC %s -; RUN: llc -mtriple=x86_64 -relocation-model=pic < %s | FileCheck --check-prefixes=CHECK,PIC %s -; RUN: llc -mtriple=x86_64 -code-model=medium -relocation-model=static < %s | FileCheck --check-prefixes=CHECK,MSTATIC %s -; RUN: llc -mtriple=x86_64 -code-model=medium -relocation-model=pic < %s | FileCheck --check-prefixes=CHECK,MPIC %s - -@foo = internal global i32 0 - -define dso_local i64 @zero() { -; CHECK-LABEL: zero: -; CHECK: # %bb.0: -; STATIC-NEXT: movl $foo, %eax -; STATIC-NEXT: retq -; PIC-NEXT: leaq foo(%rip), %rax -; PIC-NEXT: retq -; MSTATIC-NEXT: movabsq $foo, %rax -; MSTATIC-NEXT: retq -; MPIC-NEXT: leaq _GLOBAL_OFFSET_TABLE_(%rip), %rcx -; MPIC-NEXT: movabsq $foo@GOTOFF, %rax -; MPIC-NEXT: addq %rcx, %rax -entry: - ret i64 add (i64 ptrtoint (i32* @foo to i64), i64 0) -} - -;; Check we don't fold a large offset into leaq, otherwise -;; the large r_addend can easily cause a relocation overflow. -define dso_local i64 @large() { -; CHECK-LABEL: large: -; CHECK: # %bb.0: -; STATIC-NEXT: movl $1701208431, %eax -; STATIC-NEXT: leaq foo(%rax), %rax -; PIC-NEXT: leaq foo(%rip), %rax -; PIC-NEXT: addq $1701208431, %rax -; MSTATIC-NEXT: movabsq $foo, %rax -; MSTATIC-NEXT: addq $1701208431, %rax -; MSTATIC-NEXT: retq -; MPIC-NEXT: leaq _GLOBAL_OFFSET_TABLE_(%rip), %rax -; MPIC-NEXT: movabsq $foo@GOTOFF, %rcx -; MPIC-NEXT: leaq 1701208431(%rax,%rcx), %rax -entry: - ret i64 add (i64 ptrtoint (i32* @foo to i64), i64 1701208431) -} diff --git a/llvm/test/CodeGen/X86/fold-add.ll b/llvm/test/CodeGen/X86/fold-add.ll index e2d3b05..fc21e3b 100644 --- a/llvm/test/CodeGen/X86/fold-add.ll +++ b/llvm/test/CodeGen/X86/fold-add.ll @@ -1,30 +1,105 @@ -; RUN: llc < %s | FileCheck %s +; RUN: llc -mtriple=x86_64 -relocation-model=static < %s | FileCheck --check-prefixes=CHECK,STATIC %s +; RUN: llc -mtriple=x86_64 -relocation-model=pic < %s | FileCheck --check-prefixes=CHECK,PIC %s +; RUN: llc -mtriple=x86_64 -code-model=medium -relocation-model=static < %s | FileCheck --check-prefixes=CHECK,MSTATIC %s +; RUN: llc -mtriple=x86_64 -code-model=medium -relocation-model=pic < %s | FileCheck --check-prefixes=CHECK,MPIC %s -target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128" -target triple = "x86_64-apple-darwin9.6" -@prev_length = internal global i32 0 ; [#uses=1] -@window = internal global [65536 x i8] zeroinitializer, align 32 ; <[65536 x i8]*> [#uses=1] -@llvm.used = appending global [1 x i8*] [i8* bitcast (i32 (i32)* @longest_match to i8*)] ; <[1 x i8*]*> [#uses=0] +@foo = internal global i32 0 -define fastcc i32 @longest_match(i32 %cur_match) nounwind { -; CHECK-LABEL: longest_match: -; CHECK-NOT: ret -; CHECK: cmpb $0, (%r{{.*}},%r{{.*}}) -; CHECK: ret +define dso_local i64 @zero() #0 { +; CHECK-LABEL: zero: +; CHECK: # %bb.0: +; STATIC-NEXT: movl $foo, %eax +; STATIC-NEXT: retq +; PIC-NEXT: leaq foo(%rip), %rax +; PIC-NEXT: retq +; MSTATIC-NEXT: movabsq $foo, %rax +; MSTATIC-NEXT: retq +; MPIC-NEXT: leaq _GLOBAL_OFFSET_TABLE_(%rip), %rcx +; MPIC-NEXT: movabsq $foo@GOTOFF, %rax +; MPIC-NEXT: addq %rcx, %rax +entry: + ret i64 add (i64 ptrtoint (i32* @foo to i64), i64 0) +} + +define dso_local i64 @one() #0 { +; CHECK-LABEL: one: +; CHECK: # %bb.0: +; STATIC-NEXT: movl $foo+1, %eax +; PIC-NEXT: leaq foo+1(%rip), %rax +; MSTATIC-NEXT: movabsq $foo, %rax +; MSTATIC-NEXT: incq %rax +; MPIC-NEXT: leaq _GLOBAL_OFFSET_TABLE_(%rip), %rax +; MPIC-NEXT: movabsq $foo@GOTOFF, %rcx +; MPIC-NEXT: leaq 1(%rax,%rcx), %rax +entry: + ret i64 add (i64 ptrtoint (i32* @foo to i64), i64 1) +} + +;; Check we don't fold a large offset into leaq, otherwise +;; the large r_addend can easily cause a relocation overflow. +define dso_local i64 @large() #0 { +; CHECK-LABEL: large: +; CHECK: # %bb.0: +; STATIC-NEXT: movl $1701208431, %eax +; STATIC-NEXT: leaq foo(%rax), %rax +; PIC-NEXT: leaq foo(%rip), %rax +; PIC-NEXT: addq $1701208431, %rax +; MSTATIC-NEXT: movabsq $foo, %rax +; MSTATIC-NEXT: addq $1701208431, %rax +; MSTATIC-NEXT: retq +; MPIC-NEXT: leaq _GLOBAL_OFFSET_TABLE_(%rip), %rax +; MPIC-NEXT: movabsq $foo@GOTOFF, %rcx +; MPIC-NEXT: leaq 1701208431(%rax,%rcx), %rax +entry: + ret i64 add (i64 ptrtoint (i32* @foo to i64), i64 1701208431) +} +define dso_local i64 @neg_1() #0 { +; CHECK-LABEL: neg_1: +; CHECK: # %bb.0: +; STATIC-NEXT: movl $foo-1, %eax +; PIC-NEXT: leaq foo-1(%rip), %rax +; MSTATIC-NEXT: movabsq $foo, %rax +; MSTATIC-NEXT: decq %rax +; MPIC-NEXT: leaq _GLOBAL_OFFSET_TABLE_(%rip), %rax +; MPIC-NEXT: movabsq $foo@GOTOFF, %rcx +; MPIC-NEXT: leaq -1(%rax,%rcx), %rax entry: - %0 = load i32, i32* @prev_length, align 4 ; [#uses=3] - %1 = zext i32 %cur_match to i64 ; [#uses=1] - %2 = sext i32 %0 to i64 ; [#uses=1] - %.sum3 = add i64 %1, %2 ; [#uses=1] - %3 = getelementptr [65536 x i8], [65536 x i8]* @window, i64 0, i64 %.sum3 ; [#uses=1] - %4 = load i8, i8* %3, align 1 ; [#uses=1] - %5 = icmp eq i8 %4, 0 ; [#uses=1] - br i1 %5, label %bb5, label %bb23 - -bb5: ; preds = %entry - ret i32 %0 - -bb23: ; preds = %entry - ret i32 %0 + ret i64 add (i64 ptrtoint (i32* @foo to i64), i64 -1) } + +define dso_local i64 @neg_0x80000000() #0 { +; CHECK-LABEL: neg_0x80000000: +; CHECK: # %bb.0: +; STATIC-NEXT: movl $foo-2147483648, %eax +; PIC-NEXT: leaq foo-2147483648(%rip), %rax +; MSTATIC-NEXT: movabsq $foo, %rax +; MSTATIC-NEXT: addq $-2147483648, %rax +; MPIC-NEXT: leaq _GLOBAL_OFFSET_TABLE_(%rip), %rax +; MPIC-NEXT: movabsq $foo@GOTOFF, %rcx +; MPIC-NEXT: leaq -2147483648(%rax,%rcx), %rax +entry: + ret i64 add (i64 ptrtoint (i32* @foo to i64), i64 -2147483648) +} + +define dso_local i64 @neg_0x80000001() #0 { +; CHECK-LABEL: neg_0x80000001: +; CHECK: # %bb.0: +; STATIC-NEXT: movabsq $-2147483649, %rax +; STATIC-NEXT: leaq foo(%rax), %rax +; PIC-NEXT: leaq foo(%rip), %rcx +; PIC-NEXT: movabsq $-2147483649, %rax +; PIC-NEXT: addq %rcx, %rax +; MSTATIC-NEXT: movabsq $-2147483649, %rcx +; MSTATIC-NEXT: movabsq $foo, %rax +; MSTATIC-NEXT: addq %rcx, %rax +; MPIC-NEXT: leaq _GLOBAL_OFFSET_TABLE_(%rip), %rax +; MPIC-NEXT: movabsq $foo@GOTOFF, %rcx +; MPIC-NEXT: addq %rax, %rcx +; MPIC-NEXT: movabsq $-2147483649, %rax +; MPIC-NEXT: addq %rcx, %rax +entry: + ret i64 add (i64 ptrtoint (i32* @foo to i64), i64 -2147483649) +} + +attributes #0 = { nounwind } -- 2.7.4